<human>: I'm getting myself out of a somewhat major bout of depression, and for the first time in two years I'm thinking about my future again.  For the past few months, I've been strongly considering becoming a high school science teacher.  I've always been passionate about science, and my own science teacher in high school was my favorite teacher.  I also want to help do my part to reverse the sad state of science education in America.

I've got some obstacles in my way, though: I've already been to university once (for a degree that's unrelated to science), and dropped out.  I have an associate's degree, but none of the credits from that transferred to my university, so between them I have around $50,000 in student loan debt.  That, and some credit cards I've used irresponsibly, and a car loan, puts me in a pretty heavy amount of debt, so I can't really drop anything to go back to school full time.

I'm also worried that I may not have what it takes to teach.  Years ago at community college I tried tutoring a fellow student with a physical disability, and I'm ashamed to say I didn't have the patience to keep at it.  It was a long time ago (>7 years), and I was in a completely different mental space then, but I'm worried that the same problem will come up again.

I know there are numerous grants and incentive programs for high school science teaching to take care of (a lot of) the cost of tuition, though I don't know many specifics right now.

I've always enjoyed teaching things to my peers.  I've always been really passionate about science.  The president's call for teachers in the last State of the Union address inspired me in a really surprising way.  And I think teaching would be a much more rewarding career than the one I'm in now.  Does Reddit have any advice for me to make this a reality?

Can you succinctly summarize the text in 1-3 sentences?
<bot>: How can a heavily-indebted wage slave afford the education to become a teacher, and how can he know if he's got what it takes before jumping in?