"successful people set up their lives so they didn't need to use willpower frequently. They exposed themselves to fewer temptations."

Of course we should be skeptical of this result, as with all research, especially in psychology. after all, the previous theory had lots of apparent research support.

But that said, this is the strategy that works for me. If I want to eat less junk, I need to not have junk in the house, so close that it's in my mouth before my prefrontal cortex can call for a review.