Was talking with my therapist about how I get myself some sense of achievement in everyday life, and I told her that I occasionally give myself little secret self-appointed tasks, where the only goal is to manage to achieve some completely random, pointless, arbitrary goal without anyone else finding out or asking me about the whatever weird shit I am currently in the middle of doing. There's no punishment for failing to do so, I don't dread any kind of an outcome, nor is there any other reward for succeeding the task, than managing to succeed in it - a little challenge with no other goal or purpose than being a little challenge.
She said that this is very interesting, and asked me to name an example of one of these quests that I've given myself. I froze, drawing blank, since my current arbitrary goal is to see how long I can go on without having to explain to her what furries are.