The most important thing is to make this as simple as possible to track.

The more data you have to collect, the more tiresome it becomes. The more tiresome it becomes, the harder it is to build a habit.

Start with one. Then go to two. Then go to three. If you notice you start dropping off again go back to two.

Well fair advice, but this comes from me noticing that Im dropping off. I just didnt notice. how do you catch yourself dropping off?