Success is a state of mind.

If you want to be successful, start thinking of yourself as being
successful. You are what you believe yourself to be.
Don't be afraid of what life has to offer you. If you believe that
life is worth living, your belief will help create the fact.
The barrier between you and success is not something that exists in
the real world. It's simply composed of doubts about your ability.
Your only limits to your realization of tomorrow will be your doubts of today.

by Max Steingart