Running back was always my favorite position.

It's hard to win in the NFL. You have to maintain a very delicate balance putting together the right team to be able to win and have any amount of success.

I quit because I didnt feel like the Detroit Lions had a chance to win. It just killed my enjoyment of the game.

You can look at everything from pre-Heisman to post-Heisman, and I think that’s why it ranks up at the top, because before then, I didn’t even think I was good enough to be a professional ballplayer.

Individual goals never meant that much to me. The Heisman is no exception.

Too often we are scared. Scared of what we might not be able to do. Scared of what people might think if we tried. We let fears stand in the way of our hopes. We say no when we want to say yes. We sit quietly when we want to scream. And we shout with the others, When we should keep our mouths shut. Why? After all, we do only go around once. There's really no time to be afraid. JUST DO IT.

My desire to exit the game is greater than my desire to remain in it. I have searched my heart through and through and feel comfortable with this decision.