Tip for when you're mad at an enemy as an assassin

Don't focus them every teamfight if they aren't a priority target. Don't focus them at all if they're building defensively.

Don't quit when you go from Godlike to negative because you chose to focus a tanky enemy instead of priority targets.

Weird. Apparently some guys who like to intentionally feed in this way think jumping in 1v5 for a single kill, which later becomes no kill at all, is okay.