Failure comes consistently. Sometimes at the fault of yours, sometimes at the fault of others, sometimes to no fault of anyone.
If you have not gotten to a place to experience this, why would the idea that you will develop anything successful still be etched in your brain? Some sort of cultural ideology lie has convinced us that the truly successful are just magically hitting the mark at first effort. Garbage.
Failure tests ideas, tests the ideator, tests the implementor. Creates feelings of fear, shame, insecurity, comparison, hopelessness...
Then What?
Ask yourself that.
Then What?
Live big friends...even in your failure