Building Healthy Habits

Small changes to build into your everyday routine, even when the week gets busy.

On Sunday, it’s easy to imagine a week of home-cooked lunches, evening walks, and early nights. Then Wednesday arrives. A meeting runs over, there’s nothing ready for dinner, and by the time you sit down, you’d rather watch something than go for a walk. The plan made sense on Sunday. It just didn’t account for Wednesday.

Think of one change that would make an ordinary day a little better. You might pack a lunch that keeps you satisfied through the afternoon, take a short walk after dinner, or put your phone away before you get into bed. Give the change a specific place in your routine and decide what you’ll do when you’re short on time. After a week, you’ll have a better idea of whether the habit fits or needs adjusting. www.niddk.nih.gov

What makes a healthy habit stick?

A goal describes what you want. A habit is something you do repeatedly, often in response to a familiar situation. “I want to move more” is a goal. “I walk around the block after I put my lunch dishes away” describes an action and the moment that reminds you to do it. Over time, that moment can make the action feel more automatic. Wiley Online Library

There’s no fixed number of days it takes to form a habit. In one real-world study, people repeated a chosen behavior in the same context, and the time it took to approach their eventual level of automaticity varied widely. Missing one opportunity didn’t materially disrupt the process in that study. So if you forget a walk on Thursday, you can go again on Friday without starting over. Wiley Online Library

Some routines will always need a bit of planning. Grocery shopping may never feel as automatic as brushing your teeth. It can still become easier if you keep a running list, shop at a familiar time, and know which meals you’re buying for. Judge the routine by whether it’s helping and whether you can keep doing it.

1. Pick one problem you run into regularly

A good starting point is something you can describe in a sentence. “I want to eat better” could mean dozens of things. “I get home hungry on Tuesdays and Thursdays and rarely have dinner ready” gives you two days and a problem you can work on. You could keep a freezer meal for one night and plan to use leftovers on the other.

Think about which part of the day would improve if you made one small change:

Choose the change you have a reason to care about now. If packing lunch would save you money and make your workday easier, that gives you a benefit you can notice by the end of the week. A habit with an immediate payoff may be easier to make time for than one you feel you ought to do. www.niddk.nih.gov

2. Make the action specific enough to do

Write down what you’ll do in terms you could put on a calendar. “Exercise this week” still leaves you to decide how, where, and when. “Walk for ten minutes after lunch on Monday, Wednesday, and Friday” makes those decisions in advance. You’ll also know whether you did what you planned. www.niddk.nih.gov

Small can mean different things. If you already walk regularly, a ten-minute loop may feel easy. If you’ve been inactive or have limited mobility, a few minutes of movement that feels comfortable may be a better starting point. With food, preparing every lunch on Sunday might be too much. Setting aside one portion of dinner on Monday could give you a useful start.

You can also make the first version smaller by narrowing how often you do it. If you want to cook more, try one extra dinner each week and pick a night when you’ll get home in time. Once that meal has a reliable place, decide whether adding a second one would help.

3. Attach the new habit to something you already do

An existing routine can remind you to act. Try writing your plan like this:

After I [do something familiar], I’ll [take one specific action].

After I put my lunch container away, I’ll step outside for a short walk. After I clear the dinner dishes, I’ll put oats and a bowl on the counter for breakfast. After I plug in my work laptop at the end of the day, I’ll fill my water bottle for tomorrow. A consistent context gives you a cue you can use repeatedly. Wiley Online Library

Choose a cue that happens where you can act on it. A reminder to pack lunch while you’re on the train comes too late. Putting the lunch container next to the dinner plates gives you a prompt while you’re already in the kitchen. If you work irregular hours, an event such as “after my first meal” may be easier to use than a fixed time.

If you keep forgetting, check whether the cue is clear. “After work” could mean closing your laptop, leaving the office, or getting home. “After I hang up my keys” points to one moment. Try it for a few days and see if you notice the cue when it happens.

4. Set up your surroundings so the habit is easier

Think through what you need in the moment. If you want to walk during lunch, are your shoes at work? Is there a route you can finish and still get back on time? If you want to eat fruit with breakfast, can you see it and grab it without having to cut it up when you’re in a hurry?

Prepare the part that usually slows you down. Put a clean container beside the stove if you want to pack leftovers. Keep a glass next to the coffee maker if you’d like to drink water with breakfast. If you plan to read in bed and keep reaching for your phone, put the book on your pillow before dinner and move the charger.

Pay attention to cost and convenience, too. If fresh vegetables often go unused, frozen vegetables may fit your cooking habits better. If an exercise class is across town and you repeatedly miss it, a route near home or a class closer to work may fit. Changing the setup can solve a problem that another reminder wouldn’t. www.niddk.nih.gov

5. Decide what counts on a busy day

Give yourself a shorter version of the habit before you need it. A ten-minute walk might become one loop around the building. Cooking dinner might become heating frozen vegetables, rice, and beans. Your usual bedtime routine might shrink to putting the phone on its charger and getting ready for bed.

The shorter version should solve the problem you’re likely to face. If rain makes a walk difficult, an indoor route may help. If you often get home late, keeping a dinner in the freezer addresses a different obstacle. If you’re ill or injured, the right choice may be to rest and resume the habit when you’re able. www.niddk.nih.gov

Here’s a practical example. Suppose you planned to make dinner on Wednesday, but work runs over and you get home an hour late. You heat the backup meal you bought for exactly this kind of evening. The next day, you can make the dinner you originally planned if the ingredients are still usable and you have time. The evening changed. You still ate a meal you wanted, and you didn’t have to remake the whole week’s plan.

6. Track just enough to learn what’s working

Keep a note for a week or two. A check mark is enough if your main question is whether you remembered. If you want to understand why a habit keeps getting interrupted, add a few words. “Walked after lunch Monday. Meeting ran over Wednesday. Walked after dinner instead.” The note tells you something useful about when the routine fits. www.niddk.nih.gov

Track the action before judging the result. If your goal is to feel less rushed at lunch, see whether you actually packed lunch and had time to eat it. If you want an earlier bedtime, notice whether you put your phone away at the time you planned. You might find that the action is working but the result needs more time, or that something else is getting in the way.

At the end of the week, ask yourself:

• When did I do it most easily? Keep the cue or setup that helped.
• When did I skip it? Look for a repeated obstacle, such as a meeting or a missing ingredient.
• Did it make the day better in the way I hoped? If you packed lunch but were still hungry by midafternoon, try bringing a larger portion or a snack.
• What would I change next week? Adjust one thing so you can see whether it helps.

You can stop tracking when the routine is familiar or the notes have answered your question. If checking boxes starts to feel like a second chore, a quick look back at the end of the week may be enough.

What to do when a routine stops working

First, decide whether you had an unusual week or whether something has changed for longer. If you missed two walks while traveling, you may be able to resume your usual route when you’re home. If a new shift makes your lunchtime walk impossible every day, move it to a time when you actually have a break. Repeatedly missing a habit can tell you something about your schedule, resources, or starting point. www.niddk.nih.gov

Change the part that caused trouble. If you forget, try a clearer cue. If the habit takes too long, shorten it. If it feels inconvenient, move the supplies. If you dislike the activity, try another way to meet the same goal. You might discover that you don’t enjoy walking alone but look forward to walking with a neighbor, or that you don’t want to cook on Sunday but can make an extra portion on Monday.

You can ask for specific help. If you’re trying to get to bed earlier, ask the people you live with whether you can agree on a quieter time in the evening. If you’re trying to take a lunch break, ask a colleague to cover a regular slot when that’s possible. A small change to the arrangement around you may make the habit more workable. www.niddk.nih.gov

A four-week plan for building one healthy habit

This plan gives you time to try a habit, adjust it, and see how it holds up through a busy week. Use the same habit across all four weeks so you can learn from it.

Here’s how the same plan could work for sleep. In week one, you put your phone on a charger across the room after brushing your teeth. In week two, you realize you bring it back to bed because it’s your alarm. You check whether you can hear it from the charger or use a separate alarm. In week three, you come home late twice and still plug the phone in before getting into bed. By week four, you can judge whether the change helped you stop scrolling when you intended to. If you still lie awake for long stretches, you have a clearer idea of what the phone change did and what you may need to address separately.

Common questions about building healthy habits

How many habits should I start at once?

One is a practical place to begin if your schedule already feels full. You can combine actions when they naturally fit together, such as putting tomorrow’s lunch in the fridge and filling your water bottle at the same time. If both keep getting skipped, choose the one that matters most this week and give it your attention.

How long does it take for a habit to feel automatic?

It varies by person and by behavior. Putting a glass beside the coffee maker may become familiar sooner than finding three evenings a week to exercise. Research shows wide variation in how long people take to reach a stable level of automaticity. Use the first few weeks to learn whether the action and cue fit, rather than treating a specific date as a deadline. Wiley Online Library

What if I lose motivation?

Make the next action easier to start. If you don’t feel like taking your usual walk, you could do the short version. If you’ve lost interest in the habit itself, revisit why you picked it. Perhaps you wanted time outside and would rather garden than walk the same route. If the goal still matters, you can choose a different way to work toward it.

When should I make a habit bigger?

Consider building on it when it fits on both ordinary and busy days. Add a few minutes to one walk, plan one more lunch, or set aside a little more time before bed. If the current version is already giving you the benefit you wanted, keep it at that size. A five-minute walk that gives you a break from work can stay a five-minute walk.

Write down the habit you’ll try this week

Fill in four blanks before you move on:

After I __________, I’ll __________.
On a busy day, I’ll __________.
I’ll review how it went on __________.

For example, “After I clear the dinner dishes on Monday and Wednesday, I’ll pack lunch for tomorrow. If there are no leftovers, I’ll pack a hummus wrap and an apple. I’ll review how it went on Friday.” By then, you’ll know whether you had the ingredients, remembered at the right moment, and were glad to have lunch ready. Use that information to decide what you’ll do the following week.