Most Common Mistake

[Meister481]

I've been a cave diving for 3 years now, and I've made a few mistakes along the way, none that were critical. I was wondering what everyone thought was the most common mistake they make.

I know what my one big mistake was, I was humping it in heavy flow at JB when I missed marking the first T, never even saw it. I was even with the line and about 10' away so the T was invisible. I should have been closer. Lesson learned.

Edit:
I left out breaking rules, IMO that is done on purpose, I'm wondering about things you don't intend to do.