I get drunk everyday after work and im only 20.

I feel like im on a very slippery slope, everyday after work i buy either beers or 6 pack of bourbon and coke (double standards), i finish them that night 95% of the time. Keep in mind ive always been lightweight and my tolerance doesnt climb very quickly with alcohol.

I feel like im at the point where the thought of not drinking after work kinda hurts me mentally. Ive recently kicked my 6 year weed habit and ive just replaced it with alcohol which imo is worse.

I work as a tyre fitter, i have a girlfriend that lives with me, i havnr stayed in contact with any of my male friends which has probably taken a bigger toll on my mental health than i care to admit. My girlfriend and mum are not supportive of my daily alcohol consumption, them being worried has made me worried which i see it as a good thing but i still cant seem to kick the craving and just not buy alcohol after a day of work.

Im not the most mentally stable person because of past traumas and ive always had to have some sort of substance to keep me semi content. I know how dangerous alcohol can be and i dont want to turn into an alcoholic degenerate and waste away my relationships just because i cant be sober for longer than 24 hours.

Sorry about this being all over the place, i am sort of rushing this. I would appreciate other peoples thoughts on my situation