Go back and re-read what Thomas wrote,then double it for me. He said it exactly as I'd have said it.
I have seen it happen so many times in gyms that it is sickening; some young guy (or girl, these days) comes into a gym full of enthusiasm; you very rarely wander into a boxing gym unless you meant to be there. These prospects come every night and jump rope and do situps and hit the bags and work hard. But they are doing everything wrong and nobody tells them anything to help them and they don't know. Eventually they get to spar and it never goes right: not that they all get pounded, but the little mistakes they make all the time keep them from being involved in the sparring. Nobody tells them what went wrong, so they try harder and next time its worse. Next thing that kid full of promise shows up only 2,3 times a week and is clowning, then you don't see them anymore.
It is really unfair because too often it isn't talent or desire or work ethic that determines champions. It very often could be a lazy or overworked or less than honest trainer who ignores some kid, can't make timwe or keeps him around for target practice for "better" boxers. Thomas is 100% correct; make the effort invest the time and don't be afraid to teach yourself