Third largest single session loss

The title of this post says it all. Last night, I had the third largest single session loss of my career. I fared worse than I had in 99.86% of all the sessions I've ever played. Does this worry me, though? Not a bit. Why not? For the simple reason that I was playing well. Simply put, I'd rather play well and lose than play poorly and win.

style flavor buy_in entry players hands entries paid place winnings

MTT-R NLHE    43500  6500       9    78      84   18    25        0
MTT-R NLHE    43500  6500       9    43      65   15    37        0
MTT-R NLHE    43500  6500       9    76      61   15    23        0

delta: $-650,000
MTT with rebuys NLHE balance: $6,724,000
2017 balance: $7,563,825
balance: $18,981,655