what the fuck should i do with my life?

Haven't posted on here for a very long time yet my whole life has completely changed! Well not completely but a lot of it. I no longer live in the city that is Birmingham, I travelled away from the dull city and simply went to another city - logical thinking indeed. And now I live in Cardiff which is basically a much smaller city with lots of welsh people. It is the capital of Wales which is odd because it's so tiny, I could literally walk round most of it in a day.
When moving away from home I set up very large expectations in my head that university would change everything in existence - it didn't but surprisingly I am much happier here than I was at home.
 It's not exactly living independently but it gives you a little taste of growing up, this is something I enjoy as having your own space is great as well as there is someone to talk to constantly and more than likely an opportunity to go out 99% of the time. For the first few months life was perfect, I had new friends and a new start as well Jon coming to visit me a lot. I had never felt this happy before, a tad dramatic but after a eventful year at art foundation I was ready and determined for a better year. 
Art foundation definitely made me realise I did not want to take an artistic direction in my life but instead writing or learning about the media, after my previous post I was hoping to find my passion here in Cardiff but low and behold I pretty much dislike the course I am studying. 
And now here I am writing a blog post at 4am questioning what to do with my life and toying with the idea of moving courses. Today, well yesterday I woke up at 5pm with a cardboard box full of fried chicken and chips stinking out my room. I decided this isn't how I want to do things in my life but yet I cant seem to decide on any direction. I'm not saying that at the age of 20 I should know what to do but I would like some sort of idea of what I am at least passionate about. In the past few weeks I have thought about leaving uni and taking a floristry course - why? Because flowers are pretty..
Not exactly the best reason but I suddenly has this vision in my head of myself owning my own flower shop dressed like Audrey Hepburn and singing which isn't very realistic. I keep looking into what I should do but get distracted by things such as stressing that I am developing a second chin or looking at my Bob Marley poster and thinking, "I wish I was Bob Marley." And the latest thing to distract me is staying up till stupid o clock watching My Big fat Gypsy Wedding and now I am writing a blog post. 
Sometimes I am tempted to move to Fashion Promotion/ Retail but fear I am not confident or sassy enough to do a degree in it let alone work in that kind of environment. I've even googled, 'what the fuck should i do with my life?' Which somehow ended up telling me to be a postman. Truth is I think I need to change my mindset but I honestly do not know how, travelling maybe to enlighten me? But that would cost me a boatload of money so until then I am stuck deciding what to do. I hope to figure a bit out before September otherwise I will have nowhere to live. If anyone has any idea of what I should do please let me know on twitter @Clbrowntown this is literally begging omg.

Peace, also I apologise for the amount of I's in this post as well spelling mistakes and well for just moaning.