One good thing to think about was what your childhood was like. What did you do a lot as a kid? What did you enjoy? What were you known for? Sometimes this can reveal some of your deepest talents and certainly will reveal interests that can be probed further. Think about your hobbies as your personality is made by them they are the things you do regularly and your hidden talent is that which you can do better than everyone so focus on your hobbies and how you do them every single step.