You have to let go to fly...
The people who succeed don't do so because they're not afraid.
Or because they're supremely confident or exquisitely gifted.
They succeed because they're scared shitless but the thought of remaining where they are is more frightening than the thought of doing everything they can to get to where they want to be.
It's ok to be afraid IF you keep moving forward.
You gain confidence as you find your wings in flight, not while you're stuck on the sidelines justifying your lack of action with lame ass excuses.
Jump.