Dealing with Large Losses at a Very Good Table

[z80x86]

I've recently moved up to the 5/10 full games. I'm sufficiently bankrolled ($4700) and have been a consistent winner in the past. Tonight I sat down at some tables at Empire, made okay wins at two of them, but at two of them I was getting killed. The tables were incredibly loose and aggressive, and many pots were approaching the 20BB point. Within an hour I had lost $400 between the two. I know that this is normal (only 40BB), but this isn't a thread where I'm looking for sympathy.

Problem was that I felt I was on the brink of going on a serious tilt because my solid hands were getting annihilated. I cut my loses, but am kinda disappointed I had to leave such a great game.

How do you guys relax the mind when in a situation like this?