Hobby (The Sims FreePlay)

Sims in The Sims FreePlay can develop hobbies. Players can check the status of a Sim's hobby in the Careers and Relationships tab at the bottom of the screen. Completing hobby collections will give you special items. Try to have one Sim for every hobby so that you can send them to the competition center each day and earn rewards. I have no idea how to get hobbies.