It has to be something you would associate your self-worth and belief system with. It’s something that you will still want to do even after you’ve earned far more than enough money to lead a content life.
If it’s this important, I guess it makes sense that it will take a while to figure out. Some people say you can usually uncover some hints from what you were thinking of becoming when you were a kid.
What I’ve been thinking about so far: it has to involve interaction with other people, to help them achieve their goals to help make them feel better about themselves yet it’s not a client relationship so I can maintain a good level of freedom and do not need to bend over just to make them happy. Something similar to working in a private practice where you own a certain field and people will trust you when they seek for advice.
Short-term goal: read more books on personality and psychology.