I have a problem

Hey all !

i have a bit of a situation over here and i need help to find a solution.

i've been playing this game for a year and half and it's 1 of 3 games i have more hours in than other games. i really love this game and don't want this problem to be a factor to the point where i'll have to give up on the game and try something else. Hopefully to get the answer directly from players who've had the exact same experience and give some advice. so here's the problem:

i have anxiety, nothing to big. it doesn't bother me too much to the point that i would freak out and in need of medicine or a breathing technique to help calm my nerves. but then again i'm not sure of myself that i'm pass that so i wouldn't believe myself either after reading that. So, me playing this game , i'm able to do mostly everything a common league player can do...except for auto-attacking as a melee champion. i can CS fine and all..but for god's sake i can not stop myself from auto canceling whenever in combat with an enemy champion or making a mistake in a process of a gank or teamfight. for example , i'm playing vs another melee / ranged champion whether they're immobile or not , i hit them with e + q for those juicy 3 auto attacks off on the enemy. As this happens i get this "GOGOGO KICK HIS A**" feeling and being overly excited because of this action and in result i get a bit shaky in the hands and from there i canceled about 2 autos and lost the trade. it's terrible feeling and sucks especially when my junglers wants to gank the excitement comes out and i make mistakes in the beginning of the gank. i don't know if it's a common thing among players or if it's just me, but i hope that you guys can give me some advice or tricks to help me grow out of this. Hotkey bindings , Home remedies , some yoga , anything would be much appreciated.

tl;dr : i suck at this game and i can't stop myself from canceling my auto attacks against the enemy like a pilled potato. and potentially stop myself from crying in a corner in the fountain as i hear my nexus getting blown up. pls halp