This is very real man, I used to be addicted to games as well. I think what really helped me with my addiction is finding something else to replace it. When you quit all of a sudden like that you need another activity otherwise you will be bored and that's when anxiety kicks in.
I recommend this book "The Power of Habit" - by Charles Duhigg
Hang in there man!
RE: Video Games; The Slowest Form Of Suicide