If you don’t feel safe to be yourself, you’ll find someone safe to be.
If you don’t predetermine the conditions in which you’ll stop, you’ll quit pre-mature. According to Navy SEALS, most people stop at 40 percent of their actual capacity.
If you’re lacking motivation, there’s a problem with your goals. Either you have the wrong goals, they aren’t specific enough, or the timeline isn’t definitive enough (see Parkinson’s Law).