Fear comes from uncertainty; we can eliminate the fear within us when we know ourselves better. As the great Sun Tzu said: โWhen you know yourself and your opponent, you will win every time. When you know yourself but not your opponent, you will win one and lose one. However, when you do not know yourself or your opponent, you will be imperiled every time.
Bruce LeeCease negative mental chattering. If you think a thing is impossible, you'll make it impossible. Pessimism blunts the tools you need to succeed.
Bruce LeeRecognizing that the power of will is the supreme court over all other departments of my mind, I will exercise daily when I need the urge to act for any purpose; and I will form habits designed to bring the power of my will into action at least once daily.
Bruce Lee