My first year of college was very rough on me and I used to drink a lot. Between rum, vodka, whiskey and gin, I'd drink about 1 bottle a month and I'd drink daily. I needed to study, but I also wanted to drink, so what I'd do is I'd drink in small amounts each time (by small amounts I mean until I couldn't walk straight), wait until I sobered up a bit, and then go again. I'd do this every night, all night long, and only go to bed at dawn. Then I'd wake up at around 3-4pm and repeat. I'd spend my days drinking and studying. One particularly bad night I drank half a bottle of vodka. My normal was 1/5-1/4 a bottle a night.
Somehow, I passed all my classes and did not create the habit. I don't know how it is possible to study advanced calculus while completely drunk but I did it somehow. I had a coding course that was fairly complicated and I wrote all my programs alone while completely drunk and I managed to pass with one of the highest grades of the course. Same with the advanced calculus course.
At the end of the first semester I had about 7-8 empty bottles in a drawer, which I drank all by myself.
I kicked the habit during my second year although I'd still drink occasionally when things were bad. One time I was sad about something (I don't remember what) and I started to drink as soon as I got home and then fell asleep. I woke up 3 hours later, went to the kitchen to have dinner and as soon as I got there I vomited on the sink. I cleaned it up and 2 seconds later my roommate shows up and I strike a perfectly casual conversation with her. She didn't notice a thing. I've been able to hide this pretty well from everyone, I'd say.
A few times when I was alone at home I was so angry I got drunk and started smashing things around the house. Plates, bottles, glasses, etc... one time I had the idiotic idea of smashing an olive oil bottle. It took me almost a week and many cleaning products and homemade mixes to get that shit off the floor.
Now I only drink occasionally. I haven't felt the need to get pissed like I did in those years.