self-control sucks when it comes down to will power. that's why we have to head off temptation at the pass!

My favorite is #1: Context matters.

1) Choose your environment

Your first line of defense, and the most effective, is situation selection. That simply means choosing situations where you know there is only a small chance of specific temptations arising. For example, if you are trying to eat healthy, hang out with friends who are healthy eaters. If you do not want to eat chips when watching TV, create a chips-free environment in your home: do not buy them at the store! If you want to focus on your studies, go to the library.