You are Powerful
I spent most of my life feeling worthless and empty. It's not to say my life was awful, but I certainly encountered my share of painful things from an early age on forward. What I eventually discovered is that I truly have the power to make my life happy and successful, or sad and lackful. Everyone has the power within them to acheive great things. The only thing ever lacking is the belief that one can acheive great things. A belief is just a thought that has been so consistantly and often thought of, that it becomes a soild belief. Teach yourself to believe that you are powerful and that you are amazing, and watch what happens!