A habit tracker is a simple way to measure whether you did a habit. The most basic format is to get a calendar and cross off each day you stick with your routine. For example, if you meditate on Monday, Wednesday, and Friday, each of those dates gets an X. As time rolls by, the calendar becomes a record of your habit streak. Countless people have tracked their habits, but perhaps the most famous was Benjamin Franklin. Beginning at age twenty, Franklin carried a small booklet everywhere he went and used it to track thirteen personal virtues. This list included goals like “Lose no time. Be always employed in something useful” and “Avoid trifling conversation.” At the end of each day, Franklin would open his booklet and record his progress.