Here's what makes me good at League of legends
I got into this game by my friends, basically. So whenever im playing normals in team builder, or some duo in ranked I Always. Try. My. Hardest.. Why? Im not sure why, maybe im just that boastful guy who wants to be op in front of his friends, but thats the only reason for me to play to my full potential in games, even if we win or lose the game, i can still say i did good, (if I did of course, I always do the best thing in the best situation).. So if your having trouble in ranked or something, try duo'ing with a friend and competing with them, its more fun playing with a friend than with 4 other strangers, especially if your friend is better, which means you'll have much more fun showing off, heck even try making some friends on league, but it probably won't have nearly the same effect xD , anyway, just my 2 cents