"Learn from your mistakes"
Ok, good advice I will try it.
(Lose) Game One: Our Elise is afk since the start of match... I guess next game I could um... um..
(Lose) Game Two: Our Zed goes 1/18 in 10 minutes... Well next game I can... umm...
(Win) Game Three: The enemy had an intentional feeder. What have I learned from this? ...I'm not sure.
Pretty much every game in a nut shell. Honestly at this point LoL is no longer a fun game it is just a slot machine and that's the only reason people are addicted to it.