"You should NEVER be prepared to lose.

When you play in a tournament, every loss has to be a stab in your heart. The loss that puts you out of day two or out of Top 8 contention should take away a piece of your soul with it. You should never join a tournament with the mindset that losing is 'ok'"

Paulo Vitor Damo da Rosa, http://www.channelfireball.com/articles/pvs-playhouse-catching-up-to-brad-a-gp-portland-report-top-8/