Write down 10 things you like to do in your spare time. When your time is your own, what do you do? What are your hobbies? What do you do with your friends? What have you done recently to help people?
Think about the things that make you happiest and fulfill you. Try to write activities you see yourself being able to do all day long and not get bored.
For example, watching TV might be a good break if you're stressed out and overworked but you'd quickly get bored of it if that was all you did all day.
Don't write down what you think you "should" do. Don't limit yourself to the expectations others might have of you. Be honest with yourself and write down what actually makes you happy.
You also don't need to worry about you're going to make money from the activity (yet).
For now just focus on what you enjoy doing and what can also serve others.