Fellow CSGO player here, I was DMG when I played. Hmm, yours sounds kinda like an unhealthy addiction, but I think it will pass with time. I used to be passionate about CS too and I've played since the days of 1.5, but now I don't really feel it as something vital to my life. I just play once or twice a week, only if somebody asks me to. I think you'll get bored with it too eventually.
You can also try to replace that addiction of yours with something more healthy, like getting addicted to making money for example.
Yes I'm addicted to social media (mainly bitcointalk not Facebook), but headshot addicion is stronger than this. I think social media addiction will replace headshot addiction.