it is not just good idea, it is a must-do. but some comments. maybe it has to be more that just a habit tracker. for example I want to track some personal daily data like weight, blood sugar, blood pressure. I know there are many apps but I want to store my data myself.
but at the same time I don't want to trash the feeds of my followers, so we need some type of "hidden" posts, or subscribed only tags. It is not clear how to do that because this posts should be seen in the app for my friends but not be seen in nostr client for followers