The talent of success is nothing more than doing what you can do well, and doing well whatever you do without thought of fame. If it comes at all it will come because it is deserved, not because it is sought after.
I fear the popular notion of success stands in direct opposition in all points to the real and wholesome success. One adores public opinion, the other, private opinion; one, fame, the other, desert; one, feats, the other, humility; one, lucre, the other, love; one, monopoly, and the other, hospitality of mind.
A person who doubts himself is like a man who would enlist in the ranks of his enemies and bear arms agains himself. He makes his failure certain by himself being the first person to be convinced of it.
The good news is that the moment you decide that what you know is more important than what you have been taught to believe, you will have shifted gears in your quest for abundance. Success comes from within, not from without.