When looked through a wider perspective, when you lie to others you are lying to yourself, because you bring yourself (lying to them) where ever (you) go. If you were in their shoes, you wouldn’t like to have someone lie to you. So if you have lied to yourself, and gotten into a cycle of bad behaviour, consistency/being true to yourself and behaving in the manor that you want requires demonstrating to yourself a particular period of time that are full of points at which it would be easy to do the bad behaviour but didn’t. Than you can refer back to those points of a reference to continue to not do the bad behaviour, because you already declined the inclinations to do it several times.