I'm trying to cut down on how much time I spend arguing with people on the internet, but I just had to comment as an act of public service. I am saying this because I believe it will help you and because I care about random strangers on the internet. So take a deep breath, but on your big girl (boy?) pants, and square yourself up to this.
YOU ARE BEING AN IDIOT.
For fuck's literal sake, you are studying Economics and Management at Oxford so you are obviously not thick but you thought gambling was a good way to get rich quick? You have posted before about how much you hate your degree, how you were good at school but suck at university, and how impatient you are to grow your stash. You are young. You are inexperienced. You feel desperate. I get this. I get all this. But when you ask for advice you have to LISTEN. Draw a line in the sand here and move on with your life. If everyone could get rick quick, everybody would be doing it. There is no easy route.
I refer you back to this post from around six months ago:
http://forum.mrmoneymustache.com/ask-a-mustachian/starting-out-in-oxford-uk-advice/msg886066/#msg886066 Have you done any of it? If not, why not?
Here are a few options for you, of which you could do some or all:
1. Take a break from financial stuff and focus on getting a life. You seem obsessed with FIREing at 30, but for what? What are you going to do then? AFAIK you don't have a number because you have no idea what your expenses are. Stop trying to scheme your way into making money and instead hang out with your friends, join a load of societies, do some volunteering in the holidays... Do you actually have any hobbies or interests right now? Have some FUN. Hopefully, this will give you a dream. When you have a dream to work towards, then get back to FIRE. If you have the kind of personality that needs something to work towards right now, why not pick something like health. Take up running and eating vegetables.
2. Have counselling/therapy. If the above doesn't work and you are still so chronically unhappy with your life and yourself that all you can think about is FIREing at 30 and nothing else, take advantage of the free access to counselling and therapy you can get through either the university or the NHS and work on your depression.
3. Work on your degree. Tell your DOS you are struggling and DO WHAT THEY SAY. There are a few Oxons/Cantabs on this board - post asking for advice and FOLLOW IT.
4. Take a year out. Talk to your DOS about this. Tell them you are struggling and need a mental health break. Take a year out to temp, volunteer, kick around, revise your academic work, whatever... Oxbridge will do anything to make sure you don't drop out if you don't want to.
5. If you do want to, drop out. Why the fuck are you even doing this degree? My degree wasn't some shining example of awesomeness but I didn't HATE it. I too struggled with the transition from school to university. I wondered if I wanted to be there when I found the work hard (for, like, the first time in my whole life) and didn't have some vast passion for my subject. I decided that as I had got in I would complete the degree but made a conscious decision that I would do enough and stress enough to get by but no more. I aimed perfectly by getting a 60.25 (lowest possible mark for a 2.i, which is what most employers ask for). Knowing that I was doing that made the grind better. Get a temp job or wait tables or tutor A Level students or something for six months while you decide what to do next.
Just remember, THERE IS NO MAGIC PILL. It takes TIME. LOTS OF TIME. You will realise in a few years (I'm 25 and look back on my 19-year-old self with horror, no doubt my 30-year-old-self will be tearing its prematurely grey hair out over me now) that you didn't know jack shit at 19, but that loads of people gave you loads of great advice and you are now ready to listen to it.
Please also read this:
http://www.mrmoneymustache.com/2011/10/07/how-to-tell-if-youre-a-complainypants/(Also, even if it required no actual progamming ability, totally put that Twitter script thing on your CV. That's fucking hilarious and an awesome example of proactive thinking.)