I tried to get into BJJ. It was THE perfect hobby for me, on paper. But then I had to roll with the sweaty guy, then drive home smelling like someone else's body odor, and that was it for me.
Getting comfortable being uncomfortable is one of the big lessons from JJ. When stressful situations come up I joke that after learning to relax while being smothered in a sweaty person's rash guard forcing me to struggle to breath, there isn't a whole lot that's worse in my usual day to day.