Okay, listen man. I don't want to sound mean or anything, but you need cash to get the results you want. At the very least, buy training videos, some weights and a heavy bag or two. I mean, I don't think training videos would make you UFC-capable, but at least it's a start.
You need money for supplements, equipment, etc. You just need it. Get a good job and see how things go...otherwise stick with Taekwon-do, so at least you could do SOMETHING.
Sorry, man, I don't mean to sound messed up or anything. I'm new too, and I see dreams, too. But I don't want to raise your hopes for no reason - sometimes reality sucks, you know?
But good luck man, I hope to see you competing in the UFC one day.