Maybe you won’t succeed if you keep with it, I don’t know. I do know that you definitely won’t succeed if you don’t keep with it.
What this tells me is that you need to try a different approach. Would it be fair to say that you’ve had this mindset in the past when you were beating your head against that wall?
You need to take the pressure off yourself and try to enjoy the process. Let go of the expectation, and keep creating the conditions. Lightning will strike. Don’t be upset about the lack of repeatability, just be impressed with the possibility. In time, you’ll catch the lightning.
By the way, I’m 31, which makes me older than the majority of guys I compete against.
You keep going. It’s really that simple.
Stop comparing your progress to the progress of others. We’re all coming from different places and going in different directions. The only person you should be comparing yourself to is your previous self.