I used to be saddened after -4 buyin downswings. That is until you realize that it is going to happen over and over and over again, no matter how good you are. Losing 4 buyins is going to hapen in a matter of a single session at times (unless you put a stoploss). Yes, it's super standard. But that doesn't mean that you did nothing wrong. If you didn't play the hand perfectly, then you made a mistake, and therefore didn't win/lose the max/min. So you still need to improve upon that.