To get better at something, simply work on it EVERY day. For example, if your goal is to exercise more:

1. exercise today
2. click today's date on the calendar
3. repeat tomorrow

NothingCalendar lets users track events -- anything they feel like tracking over time. Mark off days you worked out, kept to your diet, worked on your writing, studied, didn't smoke, or anything else.

The concept of "don't break the chain" comes from Jerry Seinfeld’s Productivity Secret.

This project uses some of the open source code from Calendar About Nothing.
This project is entirely opensource itself, so feel free to check out NothingCalendar's code.