How to succeed in life and be happy. How to find your strengths as well as your preferences:
Mindfully, try a lot of different stuff when you are young. Then narrow down your search range with age, and focus on areas that are 'natural' to you. With natural I mean those that (as your experience now has shown you) play to a productive and enjoyable combination of your strenghts, your preferences and their objective worth to others.
But, even when you have chosen a couple of focus skills, remember to add some elements of chaos, e.g., combining unexpected disciplines or activities, to stimulate creative thinking and new solutions. It will make you both more productive and happy.