My mom cooked pot roast with noodles and frozen vegetables. Or she'd make spaghetti or hot dogs, or heat up TV dinners. Before I started modeling at age 19, I was 5'8" and weighed 165 pounds.
I went along doing the one-salad-a-night routine for a year. And I remember feeling so tired and depressed and irritable. I had no personal life. I was always flying someplace - weekends, holidays, vacations. Dinners at night were no fun because I couldn't eat.
It doesn't matter what age you are. You can look sexy and feel great, and that doesn't have to be a gift only for the young. It can be a gift for any age, even the old, whatever that is nowadays.
It's not about failure; it's about trying something and risking something for attaining your goal.