Apparently, low self-confidence is the key to success.
If you really want what you say you want, then, your low confidence will only make you work harder to achieve it — because it will indicate a discrepancy between your desired goal and your current state.
…if you are serious about your goals, low self-confidence can be your biggest ally to accomplish them. It will motivate you to work hard, help you work on your limitations, and stop you from being a jerk, deluded, or both.