TL:DR What is your process to become internally self validating?

The need for external validation is real. How do you validate yourself in your transition from BP->RP? It is a long and lonely road to entering the top 10% of men, and we are all striving to get there. But the transition is difficult and hazardous. It becomes easy to fall back into BP thinking without having an external validator that you are doing it right. How do you know if you are in the right path to alpha? And effectively built that "I don't give a fuck" mentality because you are internally self validating.