A lot of serious SNG players play 1000+ STTs a month (over 30 a day), and even winning players at that rate will have losing months. Don't worry about 10 tourneys without a win. If you let it get to you, it will turn into 12 tourneys without a win.
Just stick to what you know, be happy that you got your money in good, and it WILL work out.
Also, what Piv said.