Temptation
It is easier to avoid temptation than it is to resist it. Self-control is like a muscle, the more you use it, the stronger it gets. If you don’t learn to control your thoughts, you will never learn how to control your behavior.
The temptation to quit will be the greatest just before you are about to succeed. If you don’t want temptation to follow you, don’t act as if you are interested… No one knows how bad it is till they have tried very hard to be good.
It will hurt. It will take time. It will require dedication, will power and sacrifice. You will need to push your body to its max. There will be temptation. But I promise, it's worth it. When that little devil keeps on asking you to look at your past, there must be something good in the future he doesn’t want you to see. Opportunity may knock only once, but temptation leans on the doorbell.