1.I can't concentrate on the lectures,so I usually skip them.I only go to the lectures of the cell biology lecturer,cause I think he's cool,but even that is hard.My brain just fries when I try to forcefully concentrate for hours at the lectures,my attention span just drops out,I just start thinking about other random stuff.When I get home I'm extremely tired mentally from all that forcing,I just drop on my bed to sleep,when I wake up I have dinner,then fall to sleep again and there goes my day
If lectures are not your thing, then I think you are adult enough by this age to make the decision to attend or not to attend. Lectures weren't my favourite part of the school, especially when class sizes are large; this was intimidating for me. If you attend, there is no need to force yourself to concentrate. Bring a laptop or tablet into class and search the web periodically, just for fun. I used to search the internet whenever a lecturer would use a funny word or mention something really interesting, like a concept. Just make sure you can catch up later in the day after the professor posts their notes online.
2.Math - I'm not sure what my problem with math is.I'm really good at problem solving and at understanding and implementing algorithms and coding computer programs with them(I got to make a living ),but when the math exercises begin I get the first couple of minutes,then I zone out and with the months,the amount of stuff I miss out on this way piles up,so when the session comes I don't know how I'm gonna learn it all
Math can be difficult in university due to time constraints. If time constraints are an issue, speak to the professor to see if they can accommodate that for you by having you write tests in a quiet room with extra time.
3.The students - I can't get along with most of the students here and I don't fit into the ''student lifestyle'' - they get dead drunk every day(I would never pour that stuff into my body) and they spend all night in discos and night clubs.The irony is,that even with all that,they can still out-perform me,since they have this ability to sit down and study,with me it's so hard,I don't know what to do.One thing is for sure - I am NEVER going to take ADHD medication,I'd rather get kicked out than take stimulants.
Drinking is not a bad thing; however, I agree that you don't need to get drunk to have a good time. That said, not all university students fit your archetypical description. I never drank or attended parties in university because I was studying so often. ADHD medication can do wonders for some students. My friends would take some once in a while, just for the heck of it, for studying purposes. I, however, would go to the library for hours to study.
All of this is really piling up on me and I've been really neurotic lately,I don't know how long I'll last.And it's only my first year. More and more I'm starting to get these ideas that I would have never though of before - to drop out and just get a random day job, to save myself from the stress.
I remember I wanted to quite within the first two months of university. It is hard, no question about that. Remember, though, that everything at the beginning is hard, and requires time to get used to. It took me a semester until I finally felt in control, kind of like how I felt in high school. Just relax, keep calm, study at home (in a quiet place), and take PLENTY of breaks. You might even find that studying at night might be very effective.