How to remain committed to one’s decisions?

The following is an excerpt from a samvaad (dialogue) session with Acharya Prashant.

Questioner (Q): I want to talk about being committed to our decisions. Let’s say, for example, I decide that I will stop eating junk food from today, or rather minimize my consumption of junk food. But what happens is that I stick to it for a month or forty-five days, and then I go back to my earlier…