I am a first-year student struggling with every aspect of my life at the moment.
* Having to wake up really early and study all night sucks! After a long day, I don't have enough gas left to study, but I always have to force myself to...
* I feel so damn lonely. Meeting women outside of school is so hard nowadays.
* I always feel defeated during lab time and after an exam. I just don't do well as I want to...
* Classmates suck overall. I feel ppl get more immature once they come to dental school...
Gosh, why did 4 years of college went by so quickly??
Incoming extremely long ramble, but hopefully some of this will resonate, and hopefully you'll start taking steps towards helping yourself. I don't mean to try to come off as some sort of "Expert" - this is just my experience with pretty much exactly what you described in your own post.
I was going through a similar thing, feeling really tired and down all the time. Finding someone to talk to at your school, whether it be a friendly professor, a counselor, a friend - anyone, will help. I know it sounds corny: "Talking Helps", you've heard it a million times before... and maybe that's why you don't do it. There are people on your side at your dental school, as long as you stop viewing everyone as some sort of Drone.
I was at a pretty serious 'crisis level' of stress until I started talking to professors about it. I didn't even mean to, but I nearly snapped one day, and just blurted out that I was having a lot of trouble dealing with stress outside of classes. And so I found out it was pretty normal, and that there are some people willing to hear me out and talk about it. And that alone changed a lot as far as "shouldering the burden" goes. Talking helps - and we people of teh internetz don't really count.
Look at your first paragraph. "Have to" according to whom? Do you really need to hang on to that feeling of "I have to be studying", or is it detrimental to your overall well-being? This kind of "I have to" "I need to" language is usually not literal - that is, there would be few or no consequences to "letting go a little", but the wielder of these phrases (ME, a few short months ago) is generally afraid to let go, and so attaches some "necessity" to the action. Try examining whether there's a logical basis for all of this "have to" language - and just as a warning, "I have to study all day and all night or else I'll fail out of dental school" doesn't count, since it's just catastrophizing.
It's really easy to start feeling alone in D-school, and to write everyone else off as a shmuck, especially when a lot of other people seem so happy doing things you don't want to do. Don't do it. A pretty common vein of "My class sucks and I'm lonely" runs through a few of my classmates also, but when I asked them, "How many people have you actually met? How many times do you make an effort to go socialize?" the answer is usually "not that many", and "I don't go out with them, because I know they all suck and just want to get drunk", or something similar. In reality, I think there are a heck of a lot of people missing their close friends back home, and having more trouble adjusting than they're willing to admit.
Some people fake it better - that doesn't make them a-holes, and that doesn't mean they're not having trouble too. Everyone copes differently.
I'm betting that even in a tiny class, there are other people looking for friends out there. First year of Dental school isn't easy, and as you've realized, it sucks even harder when you just sit by yourself in lecture, don't talk to anyone, and go home to study crap you don't really care about right afterwards, and then go to bed to wake up to study more crap you don't care about.
So put in some effort and go meet people. MAKE (don't "find") the time to do stuff you really enjoy. If you really put in effort and you don't meet a single person you like enough to be your Dental School Buddy, I'll eat my hat. Even I've found a few, and I'm not exactly Social Model #1. I play computer games with friends back home to unwind the Dental Stress - voice chat is awesome.
So what's your stress relief method? How often do you make an effort to know your classmates? What makes you believe that everyone else is immature and somehow you have managed to be the sole mature being in your entire class?
postscript
I also bolded 'women'... if you stop focusing on meeting 'women' and just start to meet 'people' first, I think your options to find women will open up.
