I feel for you. I was like that in my first term of university. To be honest I knew I wanted to go to university, but I only "knew" that because I was clever, and it was expected that I'd go, so I was never really presented any other option.
-- Anyway. Dropping out of university is not necessarily a bad thing, for anyone. Now I have left I'm glad I did. A lot of people I speak to go for the "money" or the "experience". Let's face it, EVERY experience is a unique one, it depends on you, so university is not automatically a better experience or more unique than getting a job.
The first thing to do though is to secure another alternative. I was lucky in that went I decided to leave I found a job...within days and so could leave when I wanted. It wasn't a job I wanted to do (I didn't really know what I DID want) and you may find you have to take the first thing that comes up. Even if it's cleaning toilets. It depends on your situation, but if you really are unhappy it may give you the breathing space you need to consider things.
I did struggle to get a proper job though, it took me six months of constant applying to get my apprenticeship, and I think it was because of my age and grades. It was assumed that I was taking a gap year. In the end I went here:
http://www.apprenticeships.org.uk/I love the work I get as an apprentice. I'm in an office, but the work is varied, and though it sounds easy on paper the constant changes keep it interesting. I'm given responsibility and I'm training in almost every part of the office, and more importantly I feel useful. The thing about university for me was that I felt like I was wasting time. I didn't know what I'd do with my degree after that I couldn't do without it, with this I’m getting experience in lots of different roles including customer service, administration, handling large amount of money and running a team of people. –It’s by no means a soft option. I work full-time, attend college and do a lot of work relating to this in my own time.
What is it you plan to do? Where do you want to be? Start from there and plan backwards. If you look there are a LOT of careers that don’t need a degree, or that employers are willing to train you for. Law? Go look at Ilex. IT? Try Zenos. And it’s always worth asking companies what they offer in terms of training and advancement. I do know people that started in a law firm at 16, as a receptionist and have gone on to get a degree paid for by the company and a guaranteed job at the end of it.
University is not the be all and end all. There are alternatives out there.