Ooh cool!
I’d just have a goal for “did I buy the correct number of books this week Y/N” with a 1/week rate, and score 1 for yes (bought exactly 1 book) and 0 for no (bought some number of books other than 1).
I’m also a bit of a bibliomaniac (good article) - books are so magical - but I’m ok with that. I don’t want to stop!
I’d like to adapt this system in some way for my web page problem though. Not sure how other people manage to avoid having hundreds or thousands of tabs open. I need to get a Firefox addon that has a tab queue and train myself to open new links in the queue instead of in a new tab!