“The best thing that can happen to a human being is to find a problem, to fall in love with that problem, and to live trying to solve that problem, unless another problem even more lovable appears.”
Karl Popper
Here are a few questions that might help you to identify your primary interests:
what did you want to be when you were growing up and what are the elements that attracted you: serving others, being creative, problem-solving, making something that lasts?
what kind of activity puts a spring in your step or quickens your pulse (and what do you try to avoid)?
where do you ‘lose yourself’ so that time flies by?
when have you been most productive?
what do you do when you should be doing other things (perhaps there are ways you can use this as a guide to other activities that you might enjoy or even find a way to do more of this constructively)?