Nobody succeeds alone, you need a team. But you alone must build that team.
One very important person in your team is your coach. All top performing athletes have coaches. Artists have coaches. Leaders in any fields have coaches. Do you have one?
A good coach believes in you even when you do not believe in yourself. That's why truly committed coaches have a huge positive impact on their clients.
Your coach should bring out the best in you. And helps point out your blind spots. But you must also help your coach to help you do that. Ultimately, it is still you who is getting in the ring to fight that fight - not your coach. But you still need a coach. Unless you are contented with the status quo. Ideally, status quo is only for people who aren't bothered by it.