You can only take responsibility for what you do. Keep everything in perspective. Sometimes the worries become trivial when viewed in a larger context. Claim your higher self. Each of us has a higher self, or an ideal self.
Some people call it a soul or spirit.
Claim that part of yourself, and center on it. Love yourself unconditionally. We all have our faults. If we can look at ourselves optimistically and pump up our positive self esteem, we can maintain our personal energy effectively.