What makes you happy?

For the last few years ever since I got out of doing really stupid shit I've sort of had this feeling of discontent following me around. If I'm not running around with my friends doing illegal shit then I just don't have that all around happiness. I don't know if it was the social aspect or the feeling of power but ever since I decided to better myself I just feel there's a void.

What is it that makes you guys happy? Is the slight feeling of discontent just a normal feeling when becoming an adult? Am I doing something wrong?