Losing arguments.
It's okay to lose arguments. Sometimes, when someone is telling you to do something, they're trying to be the shotcaller. It is infuriating, and as you argue, you realise they're right. You lost an argument. I've seen so many people flame, or simply not do things like 'farm under turret' in order to spite their teammates. And that's sad. If you know someone is trying to win, and they tell you to play safe, or not to baron, don't take it badly. Because most of the time, they're trying to help.
This applies to real life too. There's no point in arguing a fact that you don't know much about. And it's always frustrating to be on the losing side. Sometimes you need to accept that you lost and move on, not stoop so low as to insult your own teammate.
