Yesterday I was watching the WSOP ME and one of the announcers quipped "No on actually plays GTO poker, they just think they do" or something very near that. Made me smile. I remeber when GTO came into play, and I could tell who was trying to use it. Where I play they tend to be earmarked by being overly aggressive and hyperactive preflop. They tend to be the ones on the rollercoaster. Going up and down, busting out 4 times in 4 hours and chipping halfway up the amount they lost in buy ins. Puffing out their chest when they are actually down.
It really is interesting how the game affects the behavior of it's participants. People who are otherwise strong and confident become nervous, others become douchebags who are never wrong and can't take criticisms or advice and so on.
I agree that most people aren't as good as they think they are. I'm just now fully comfortable at a table and I've been playing on and off for 12 years, a little more seriously for 2-3 years. I'm still learning, and I'm just now a profitable player. I still have a ways to go, I'm still reading and taking notes and watching as much as I can. In my experience, the biggest change was just being settled. To me, my cash play is one long game. It never ends. I remember to take breaks, stay hydrated stay focused and pick my spots where I see advantages. I used to try to force wayy too many hands to go my way, now I try to create opportunities for better spots and winnable pots. I try to shape the game to my liking and I'd much rather fold and play again than make the hero call. I've legit folded every hand for an hour and been fine with it.
I'm not at all a great player, I'm just content with my development to this point. I want to play for another 6months to a year and then start trying my hand and the small local tournaments.
Also I can't play house games for shit. I never play with friends which is funny because 10-12 years ago I'd play 1-2 games a week at someone's place or a bar. Now I hate it though. When my family invites me to play I usually offer to be the dealer.