Being wrong can cost you a lot. Being stubborn about being wrong can cost you everything. Changing your opinion after learning new information is true intelligence.
The best training environment for me is back home with my dad. You could put me in the ‘best’ facility in the world and I don’t think I’d train any better. It’s not about the tools—it’s the environment. Just me and my dad. No one else. No eyes on me, no taking turns, no judgment. I can fail as miserably as I want and nobody knows. Most days I intentionally make it too hard so I have to suck. I don’t want to groove my swing all offseason with a high success rate, because real games have unlimited variability. Just something to consider if you think you need a fancy facility with people stroking your ego. Find an environment that allows you to fail comfortably.
The issue with many coaches and trainers isn’t that they never reached the level they’re trying to help others reach. It’s that they stopped learning and keep teaching at the level they plateaued at. Assuming there’s nothing more to learn.