A bullet journal can be so versatile and you can record different information. The bullet journal process is where I was first introduced to habit trackers.
Habit trackers are exactly what they say, they are a way of tracking your habits. The simple way to measure whether you completed a habit. There are plenty of theories you can find online about how many days it takes to form or break a habit. There is a 21/90 rule, this is where you commit to a habit for 21 days straight. It has said after the three weeks it should have become a habit. You then continue the habit for a further 90 days.