How to Build Habits That Last

What a habit really is

In psychology, a habit is an action that's triggered automatically by a cue you've linked to it. The 2012 review by Gardner, Lally and Wardle gives everyday examples: washing your hands after using the toilet, or putting on a seatbelt after you get into the car.

The key word is automatic. Once the cue takes over, you don't need as much willpower or motivation to start. That's why habits are so useful. Motivation goes up and down. A good habit keeps going even on low days.

The review says decades of research show the same thing: repeating a simple action in a consistent context builds the link between the cue and the action.

Why willpower alone isn't enough

Most advice to "eat better" or "move more" relies on motivation. The 2012 review points out the problem: the effects of that kind of advice are usually short-lived, because motivation and attention fade.

Habits work differently. Once a cue starts the action, you rely much less on conscious effort. That's the whole point of building a habit instead of just trying harder.

NIH News in Health adds a related idea. It quotes psychologist Roy Baumeister, who says self-control works like a muscle. After you resist one temptation, your willpower can be temporarily drained, which makes the next one harder. Regular small acts of self-control, he says, can strengthen it over time.

The takeaway: don't count on willpower to carry a new routine. Set up a cue that does the work for you.

The habit loop: cue, routine, reward

Many people describe habits as a loop with three parts:

• Cue: the trigger. It can be a time of day ("after breakfast") or an event ("when I get to work").
• Routine: the action itself, like drinking a glass of water.
• Reward: the good feeling or result that makes you want to do it again.

NIH News in Health explains that enjoyable events can trigger the brain's reward centers, and that this strengthens habits. That works for good habits and bad ones alike. It's also why NIH suggests giving yourself a healthy treat when you reach a small goal.

How long it really takes

You may have heard that it takes 21 days to form a habit. The 2012 review calls that a myth. It says the idea seems to come from anecdotal reports about how long patients took to adjust to a new appearance after plastic surgery.

The real data look different. In the study the review describes, people picked one healthy action, like eating a piece of fruit or going for a walk, and did it after one daily cue. They rated how automatic it felt each day. On average, it leveled off after about 66 days.

Two other findings are encouraging:

• Missing a day is okay. Skipping the action once didn't seriously set people back. Progress soon picked up again.
• Simple actions stick faster. Drinking a glass of water became automatic more quickly than doing 50 sit-ups.

The review's leaflet for patients puts it simply: it will get easier with time, and within about 10 weeks you may find you're doing it without thinking.

The hardest stretch is the middle, when the novelty wears off but the habit isn't automatic yet. Olive is a health companion that checks in with you every day and helps you build small habits that actually hold. It doesn't diagnose or treat anything.

A 5-step plan to build a habit

This plan follows the steps in the 2012 review.

1. Pick a goal you care about

Start with something you want, like more energy, better sleep or less stress. You'll need enough motivation to begin.

2. Choose one small daily action

Make it simple and specific. "Drink a glass of water" is better than "be healthier." The review notes that simple actions become automatic faster than complicated routines.

Choose something to start, not something to stop. The review says you can't form a habit of not doing something. Breaking an old habit takes different strategies.

3. Tie it to a cue you already have

Pick a moment that happens every day, like your morning coffee, arriving at work or brushing your teeth. Then do the new action right after it. People often call this habit stacking.

The review gives an example: eating a banana with your cereal at breakfast. Same action, same moment, every day.

4. Repeat it in the same context

This is where habits are built. Doing the same action at the same cue matters more than variety. Variety can keep things interesting, but it can also slow down how quickly the habit becomes automatic.

5. Track it, without obsessing

The review suggests a simple daily tick sheet. Check off each day you do the action. At the end of each week, rate how automatic it feels from 1 to 10. Watching that number rise can keep you going.

Tracking is a tool, not a test. If you miss a day, mark it and move on. The research says one miss won't erase your progress.

Start tiny

Small starts lower the bar on hard days. Some examples:

• Movement: two minutes of stretching after you sit down at your desk. Our desk movement breaks guide has easy options.
• Water: one glass with breakfast. See our hydration habits guide.
• Sleep: the same lights-out time every night. Our sleep hygiene checklist covers more.
• Stress: three slow breaths before you open email. See everyday stress habits.
• Food: a piece of fruit with lunch. Our everyday nutrition habits guide has more ideas.

Once a tiny habit feels automatic, you can build on it.

What about breaking bad habits?

NIH News in Health says there's no single way that works for everyone. Its suggestions include:

• Notice your triggers. Habits are often tied to places and activities. If you always grab a snack on one route, try another route.
• Plan ahead. If you can't avoid a tempting situation, picture how you'll handle it and practice it in your mind.
• Replace, don't just remove. Swapping an old routine for a new, healthier one can help.
• Get support. Ask friends, family or co-workers to help.

This guide is general information, not medical advice. If you're making a big change to your activity, sleep or eating, check with a doctor first.

Keep going past the hard middle

Starting is the easy part. Repeating it for weeks is where most habits stall. Olive checks in with you every day and helps you build small habits that actually hold.

See how Olive works →