The most glorious moments in your life are not the so-called days of success but rather those days when out of dejection and despair you feel rise in you a challenge to life and the promise of future accomplishments.
If you think of exercise as a 60-minute commitment 3 times a week at the gym you're missing the point completely. If you think that going on a diet has something to do with nutrition you don't see the forest through the trees. It is a lifestyle. I know it sounds cliche but you have to find things you love to do.