Please help, I need to stop raging.
Hi. I'm Nick, and I am a rager. I am a silver 5 player (probably lower than that, but I finally climbed out of bronze after 4 years of playing) and I am very susceptible to raging and tilting out of control. If I am targeted by the enemy jungler (such as a lee sin or shaco in a lvl2 cheese gank or a huge amount of counter jungling) I start to flame the enemy who is targeting me, cursing, screaming, I've even broken my mouse once. I know i need to change. I hate this about myself and I know i make the game unfun for 9 other people for as long as they are stuck with me in this game. I am trying a few techniques i've found online with very little success. Everything I can find is an "after the fact" sort of solution, like taking a break, going outside, or doing quick exercises. I clearly cannot do those mid-game, however. I need to find an immediate way to untilt an relax whilst being egged on by the enemy targeting me. I don't know how to deal with this, as it feels like they are specifically targeting me because I am a weak player. I am not confident in my skills, and am prone to mistakes (still a bronzie basically after all) and I am ashamed at myself for making mistakes and raging. I know that makes me the perfect target too, so it's almost a self fulfilling prophesy in my mind. I understand that yes, it is a game, but it is a game that I love and want to improve at. I want to eventually get to gold tier (my goal since the start) and I know I am holding myself back. I am ruining my mental state with my anger, and I am on the verge of giving up on this game and the 600+ dollars I have spent on it. I really don't want to quit after not achieving my goal, but I will never get there with the way that I am. This is also ruining my relationship with my friends and my girlfriend who I play with constantly. She is also on the verge of not playing, even though its the only game we play together.
Please, please help me. I'm not sure what to do. I don't want to ruin my hobby or my relationship.