If you genuinely want to be successful, start thinking of yourself as successful. There is merit in the phrase fake it til you make it.
The only things that stand between you and what you want in life are the will to try it and the faith to believe it is possible. There is nothing on earth you can't have once you mentally accept that you can have it.
The feeling must come first. It will be so if you feel successful and have a deep inner conviction that you'll always have all you need.
So whatever your mind can conceive and believe in, your mind will help you achieve.