The most common mistake in BJJ IMO is people don’t listen:
‘I can give you information that took my six months to figure out in six days, but your actions tells me you’d rather figure this out on your own.’
This is a frustrating one, but I’m learning to let it go and leave people to their own process.
With the amount of information out there right now, reasonably intelligent people can achieve a degree BJJ competency through self-teaching, it just takes longer.
The lesson for me is when in doubt, focus on myself so I have MORE to offer the rare and beautiful who do listen.