"Doing what is right, fair and honorable is more important than winning or losing." 

Chick Moorman

I think as long as you feel good at the end of the day you'll think that is what is more important, happiness. At the end of the day you should feel better about yourself, no matter whether you won or lost , what matters most is happiness. Someone's wrong maybe a right or vice versa, relying on the first piece of information is useless, and same with the rest. It helps to keep an open mind too. You should open yourself to new ideas. Although we should abide by some rules, we should also learn to go our own way. We shouldn't be a follower all the time, sometimes we have to stand up for what we think is right.