Writing about Writing

I love the reading and I love the idea of being a writer. I loved Dan in Gossip Girl and Lucas in One Tree Hill and how they had such a way with words - they could make people feel things, hurt people, save people. and change people. I, on the other hand, have a blog no one knows about because I don't think I write about anything worth reading. I always admire people who write articles for Her Campus or Hello Giggles or run a successful blog but I've always struggled to find the inspiration to write a novel or a short story or even a continuous blog. My posts usually end up being rants or late night thoughts if I'm really inspired enough to start writing.
The problem is starting. Once I think about something and start typing the words flow, whether or not they're good and it's not a problem, but I could sit and stare at my computer screen for an hour not knowing what to write.
Writing is like a guilty pleasure that I also kind of hate - mostly because I read other things and am in awe and jealous that I'm not as good with words. I think it would be awesome one day to write a blog like Carrie Bradshaw in Sex and the City, or publish a novel, and I feel like I should've had enough experience by now to be able to write one, but how does a pretty average, basic, white girl from a generic American suburb find something incredible to write about?
I'd like to believe I'm not as average as I appear. I always try to be more interesting - to have more to me and be complex and wildly inspirational - the kind of person people meet and say "she's going places" the problem is I have no idea where I'm going. I liked radio for a while, I still love music and editing sound but I don't see a career in it. I love my business classes but I also feel like there's always so much to know. I like reading and editing but being an English major doesn't sound appealing. So what am I left with? For now business, I just hope that I can be more than an average business person - that I can do something to change how people think or help people grow. I think that's really what I want to do - leave an impact.