Buy and sell on eBay. You can start with very little money and very little time and build up as you succeed. The absolute essential is that it HAS TO be something you know extremely well (better than the average person), so that you make something on every transaction. Lots of people have built quite big businesses on eBay (big enough to live well off).
The smart thing would have been obviously not to run up a debt that you cant afford. I would see if you can get them to lower the interest rate. Otherwise try to get a better job or weekend hours at least until you can get it paid down, you either have the money or you dont.
Look at your budget and cut non-essentials. It's only $900 - not much at all. If you find $50 a paycheck to save, you're out of debt by the end of the year. $50 isn't hard to find - if you make coffee at home vs. going to Starbucks, that's $50 right there.
Contact the institution the credit card is drawn on and explain your situation to them. In many cases they will work with you to get it paid down. Lower interest rates, lower payments...