Great points! Cooling your head off with other activities is a great way to think about your bets that didn't go so well and come back with a fresh spirit and body intact. That way, with a good mood, you are going to have better odds, in my opinion 
That will only happen if you do not put a lot of money in your bet that will make you feel uncomfortable and you are not able to sleep properly because of the loss.
Making yourself cool and not get worried about the loss will only happen when you put a very little amount of money in each of your bet and games. The moment you put more money and you lost that bet, there is no way for you to keep calm and relax.