Friendly reminder; You're not alone in a game.

Over the course of months in League of Legends, occasionally I come across people completely losing their cool when a jungler of support denies a laner's desires. This in the form of taking kills (even by accident), or denying them a red/blue when they aren't the only one needing the spoils of that camp. Supports and Junglers don't have as much CS gain as much as laners do, but just like the laners they need items as well. Wanting a red/blue buff can be nice, but you got to realize it'll tax your jungler for 100 gold, which is something your jungler may not always be able to afford losing.

This is the biggest step that I see people from Bronze > Silver being unable to overcome, the realization that there are more people in the game. The acceptance that there is five of you that needs Gold to buy items, and not just one. Funnelling all gold into one champion will make the rest of your team worthless. If you're dead, they're dead. If you're away or somewhere else, they're dead. And only a major assortment of skill can assure that gold being put to good use.