Monitor your emotions. Practice Realistic Optimism. Solve own problems. Practice self-compassion. Set healthy boundaries. Manage time wisely. Strive to fulfill your purpose. Seek to grow stronger everyday. Monitor your progress.
Doing whatever it takes to improve can help you reach your greatest potential. It starts with acknowledging your weaknesses and having a "no excuses" approach.
http://finance.yahoo.com/news/9-things-mentally-strong-people-143500092.html