Let me give you a passage from George Leonard's excellent book "Mastery", page 140.
"Mastery is not about perfection. It's about a process, a journey. The master is the one who stays on the path day after day, year after year. The master is the one who is willing to try, and fail, and try again, for as long as he or she lives."
Ask yourself, are you up to that. Are you man enough to consistently go after what you want even though it'll punch you in the balls 'till they're blue and rip your heart out time and time again? If you are, you're going to grow yourself a pair of titanium balls.
If not, ask yourself: what is holding you back? You see, the only thing holding you back is yourself.
It's all up to you, me ;)