I know from personal experience that working out has helped me to feel better about myself. I remember learning in psych class years ago that exercise is one of the greatest cures or combatants for depression. I know that whatever it is that you "do", you should get out there and do it. I am not into the gym routine, though most of my friends are. I prefer running on the beach, surfing, and doing body weight exercises, i.e. dips, push-ups, pull-ups, leg-lifts, etc.
So now I am gonna do my best to get out from in front of this computer and go work out before I have to go to work. I know in the end I'll feel better about myself if I do.