Oh I know not to fight when something is lost, but in nogi my shit just gets wrecked superfast because it's so explosive and people treat your neck like it's a handle.
I've been doing martial arts in general for almost 30 years now, and I definitely was too careless when I was young. Bad advice about injuries where I got sent to a chiropractor instead of a surgeon meant I already had to get hip surgery before I had turned 40. (Bad FAI angles aggravated by trying to break through the pain, for over a decade, since I believed everyone I was being lazy and soft) I'm luckily more careful now, but there's still days where I'm in pain just from walking or driving my car.