Play like GuardsmanBob!
He is probaly one of the best role models I can think of, how you should play. What do I mean with this?
He is a calm player who is never flaming or anything else. He is taking the game as a game, and he never plays with a bad mood. While this, he is actually talking with his team only about import aspects of the game and nothing more. He is not the guy who calls GG after champion pick.
Be like GuardsmanBob, visit his stream and get a better player and get elo.