You're thinking too much about playing fair and not enough about having fun. You can't have fun if you don't play fair because you can't learn anything or ever really win and you'll feel guilty all the time if you don't play fair. So really all you have to ask yourself is "Am I having fun?" and be very, very honest when you answer.
"Tell me, what is it you plan to do with your one wild and precious life?" - Mary Oliver
