Sometimes this involves praying for them and really truly loving them. Even if it's a "friend" who stabbed you in the back. These are lessons Christ taught. Learning these lessons can be painful, but they are lessons that Donald Trump can't buy with money. This lesson is worth more than all the money in the world.
So when your sitting in the stands and your opposing team scores or worse/ wins the game, you look at the guy wearing red sitting next to you, pat him on the back, smile and say, "You have a really good team." Practice it in the mirror if you have to.