You may say - stop drinking, stop having sex, stop doing this and that. Fast.
I say - realize your needs and live your life accordingly. That will spare trouble for others and you shall be happy by being honest with yourself and others.
@ Bardia - well, when I say that we are animals, I'm pointing at a biological fact. Anthopologists and evolutionists would tell you the same reasons of infidelity. Yet my view is much broader than that and I'm not willing to unfold it yet. Understanding the very basics of our nature helps me tolerating how wicked we are sometimes.