1 - Turn of the TV.
2 - Close Facebook.
3 - Turn of the cell phone.
4 - Music is a really good option to relax. Avoid trash metal.
5 - Make it clear to people near you that you are doing a serious thing for you and, no, you don't want to discuss your relationship right now.
6 - Close Firefox, Chrome, etc.
7- Try to enjoy the game. If you are bored, your mind will travel to a better place.
8 - Don't focus only in that player who catch you twice. While you are planning your revenge the other ones are taking all the fish.
9 - Now you have 15.000 chips and are in the top ten. Time to relax and and forget your strategy? No, superman, you still need 5.985.000 chips to win the tournament.
10 - Well, play with concentration, but still try to have some fun. Life is short.