I find tremendous comfort in the fact that the toughest battle I will ever have to face is myself. Paul penned this with unmatched passion and pain in Romans 7.

You can get away from people or situations that tempt you to sin. But you cannot get away from you. Like Dr. Seuess said, "There is no one alive who is youer than you." If you're down, discouraged, or close to giving into your flesh, be encouraged that this is as tough as it gets! And this is the most important battle of all, the one where Satan would rejoice to see you surrender.