We may think there is willpower involved, but more likely... change is due to want power. Wanting the new addiction more than the old one. Wanting the new me in preference to the person I am now.

Exercise: you don't have time not to

Once you have decided that winning isn't everything, you become a winner.

I have found my hero and he is me.

Fitness is just a stage you pass through on the way to becoming a racer.

The real competition is against the little voice inside you that wants to quit

Anything that changes your values changes your behaviour.