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 LeeWhen one has reached maturity in this art, one will have the formless form. It is like the dissolving or thawing [of] ice into water that can shape itself to any structure. When one has no form, one can be all forms; when one has no style, one can fit in with any style.
Bruce Lee