After Annacache recommended that I read The Motivation Hackercache, I went down the rabbit hole. I had already discovered Beemindercache the day before, and now I was truly motivated to set myself up with some goals.
You can see them on my public goal pagecache, but for now they are primarily about keeping up my language studies, spending a bit more time on piano and making sure I go for a run regularly. I'm not sure if I actually care about the money betting features, but just seeing the steady line of past effort is quite interesting and motivating. Maybe I should also add a goal about writing a blog post at least once a week? ... I've now set up a goal for 2 posts per month, with automatic tracking using IFTTTcache.
I've also started to use RescueTimecache on all my devices, though I'm not yet sure how useful it is. For the time being I've only set it up for tracking, no goals based on it. I guess I can use it to figure out how much time I actually spend on studying Japanese on WaniKani, or reading HackerNews every day.