The way I see it, you need something to really motivate you. In my case it's health (hormones and joint problems). I have real, tangible health problems that benefit from less indulgences. It would be more difficult, if I were already pretty much healthy and only wanted to make sure I stayed that way. No, I know my problems are influenced greatly by my diet and my body constantly reminds me why I need to eat this way and not cheat. So find what motivates you.