My story can be summed up by this scene from Dodgeball. Cliffs: I got pissed enough at myself to do something about it.

Globo Gym Announcer: Tired of the same old you? Tired of being out of shape and out of luck with the opposite sex? Tired of being overweight and under-attractive?
White Goodman: [finishing a ride on the skis] Yeah! Oh, hello. I'm White Goodman, Owner, Operator, and Founder of Globo Gym America Corp, and I'm here to tell you that you don't have to be stuck with what ya got.
[a buffed Globo Gym member is lifting weights]
White Goodman: Hey, Rory. Looking good. Here at Globo Gym, we understand that "Ugliness" and "Fatness" are genetic disorders, much like baldness or necrophilia, and it's only your fault if you don't hate yourself enough to do something about it.

The strength, perseverance, consistency, and determination learned from maintaining a physically active lifestyle can also be applied to all aspects of life.