I'm religious - so we're speaking the same language. I think part of what we're called to do, religiously, is to overcome what we are. By nature, man is greedy, jealous, lustful, etc. In order to lead a good life, you must overcome those desires.

I will say that lust is probably the hardest item to overcome. It strikes us as an urge no different than "being hungry." Sure, the feeling ebbs and flows. But there are times where you will overindulge.

The idea isn't to "not make a mistake." The idea is to learn from your mistake and be better next time.