eak performance experts say things like, “You should focus. You need to eliminate the distractions. Commit to one thing and become great at that thing.”

This is good advice. The more I study successful people from all walks of life—artists, athletes, entrepreneurs, scientists—the more I believe focus is a core factor of success.

But there is a problem with this advice too.

Of the many options in front of you, how do you know what to focus on? How do you know where to direct your energy and attention? How do you determine the one thing that you should commit to doing?

I don’t claim to have all the answers, but let me share what I’ve learned so far.

Like most entrepreneurs, I struggled through my first year of building a business.

I launched my first product without having any idea who I would sell it to. (Big surprise, nobody bought it.) I reached out to important people, mismanaged expectations, made stupid mistakes, and essentially ruined the chance to build good relationships with people I respected. I attempted to teach myself how to code, made one change to my website, and deleted everything I had done during the previous three months.

To put it simply, I didn't know what I was doing.

During my Year of Many Errors I received a good piece of advice: “Try things until something comes easily.” I took the advice to heart and tried four or five different business ideas over the next 18 months. I'd give each one a shot for two or three months, mix in a little bit of freelance work so I could continue scraping by and paying the bills, and repeat the process.

Eventually, I found “something that came easily” and I was able to focus on building one business rather than trying to find an idea. In other words, I was able to simplify.

This was the first thing I discovered about figuring out what to focus on. If you want to master and deeply understand the core fundamentals of a task you may, paradoxically, need to start by casting a very wide net. By trying many different things, you can get a sense of what comes more easily to you and set yourself up for success. It is much easier to focus on something that's working than struggle along with a bad idea

If you want to stick with a habit for good, one simple and effective thing you can do is keep a habit tracker.

Here's why:

Elite performers will often measure, quantify, and track their progress in various ways. Each little measurement provides feedback. It offers a signal of whether they are making progress or need to change course.

Gabrielle Hamilton, a chef in New York City, provides a good example. During an interview with the New York Times, she said, “The one thing I see that consistently separates the chef from the home cook is that we taste everything, all the time, before we commit it to the dish, right down to the grains of salt. We slurp shot glasses of olive oil and aerate them in our mouths as if it were a wine we were trying to know. We taste the lamb, the fish, the butter, the milk before we use it… we chew salt to see how we like it in our teeth, on our tongues, and to know its flavor, its salinity.”

For the chef, tasting the ingredients tells them whether they are making progress toward their desired end goal. It provides the immediate feedback they need to get the recipe just right.

Like a chef improving a recipe through trial and error, we often improve our habits through trial and error. If one approach doesn't deliver the desired effect, then we adjust—like a chef tweaking the amount of an ingredient.

However, there is an important difference between getting feedback while cooking a meal and getting feedback while building a habit. When it comes to building a habit, feedback is often delayed. It's easy to taste an ingredient or to watch bread rise in the oven. But it can be difficult to visualize the progress you are making with your habits. Perhaps you've been running for a month, but you still don't see a change in your body. Or maybe you managed to meditate for 16 straight days, but you still feel stressed and anxious at work.

Habit formation is a long race. It often takes time for the desired results to appear. And while you are waiting for the long-term rewards of your efforts to accumulate, you need a reason to stick with it in the short-term. You need some immediate feedback that shows you are on the right path.

And this is where a habit tracker can help.

To make this process as easy as possible, I created the Habit Journal, which includes 12 habit tracker templates—one for each month. All you have to do is add your habit and start crossing off the days.

Placing an X on each day is the classic look. I prefer something a little more design-oriented, so I shade in the cells on my habit tracker. You could also use checkmarks or fill your habit tracker with dots.

Habit tracking naturally builds a series of visual cues. When you look at the calendar and see your streak, you’ll be reminded to act again.

Research has shown that people who track their progress on goals like losing weight, quitting smoking, and lowering blood pressure are all more likely to improve than those who don’t. One study of more than sixteen hundred people found that those who kept a daily food log lost twice as much weight as those who did not. A habit tracker is a simple way to log your behavior, and the mere act of tracking a behavior can spark the urge to change it.

Habit tracking also keeps you honest. Most of us think we act better than we do. Measurement offers one way to overcome our blindness to our own behavior and notice what’s really going on each day. When the evidence is right in front of you, you’re less likely to lie to yourself.

The most effective form of motivation is progress. When we get a signal that we are moving forward, we become more motivated to continue down that path. In this way, habit tracking can have an addictive effect on motivation. Each small win feeds your desire.

This can be particularly powerful on a bad day. When you’re feeling down, it’s easy to forget about all the progress you have already made. Habit tracking provides visual proof of your hard work—a subtle reminder of how far you've come. Plus, the empty square you see each morning can motivate you to get started because you don't want to lose your progress by breaking your streak.

Finally, tracking feels rewarding. It is satisfying to cross an item off your to-do list, to complete an entry in your workout log, or to mark an X on the calendar. It feels good to watch your results grow and if it feels good, then you’re more likely to endure.

Habit tracking also helps keep your eye on the ball: you’re focused on the process rather than the result. You’re not fixated on getting six-pack abs, you’re just trying to keep the streak alive and become the type of person who doesn’t miss workouts.

Alright, those benefits sound great, but it's not necessary to fill your habit tracker with every habit that makes up your day. In fact, if you're already sticking to a habit, then it seems like extra work to me to track it as well. So what should you measure in your habit tracker?

Habit tracking can help kickstart a new habit or keep you on track with behaviors that you tend to forget or let slide when things get busy.

In Atomic Habits, I recommend using the Two-Minute Rule, which suggests you scale your habits down until they take two minutes or less to perform. You can track whatever habits you want in your habit tracker, but I recommend starting with these super small habits to make sure that you are at least showing up in a small way each day. I'll share some examples below and break them out by daily, weekly, and monthly habits.