"I am a runner"

I read an article the other day that said to be more successful and motivated at a sport it should be part of your self-image. If you tell yourself "I am a swimmer/runner/bowler" you will be more inclined to work out and for longer periods of time. Up until last year I had never run farther than a mile. I started running because, let's face it, loosing weight in your thirties is harder than in your twenties and it would be something I could do with my hubby. I also knew that if I signed up for a race it would be good motivation to get up and get to the gym everyday. I'm up to about fifteen miles a week, which will never make me a marathoner, but I can say "I am a runner."