In lots of sports, it helps to have a bad memory. You hit a bad putt, throw an interception, miss a volley, fugetaboutit! To focus on the bad shot only helps your opponent. But in Murray's case, he took it a step further. To add insult to insult, Murray would scream at himself even when Warinka would hit an amazing winner. A classy response would be clapping your own racquet, not a tantrum.
I guess the moral of the story is if you are going to lose, keep it classy. Ivanovic did and almost won. Murray didn't and got clobbered. And here's another thought, let's get a Kickstarter campaign going for Andy Murray so this millionaire can get him some psychological help. I'm serious.