Depressed in this economy

Today started out so depressing for me. I am continually making jewelry pieces to upload to my store but I've only made two sales. More sales would have to keep rolling in consistently for me to actually quit my job and run my own business. So that leaves me stuck in a job i hate.  I gave up looking for a caseworker Job in the foster care field. Although i have the experience i'm not getting any call backs. I've read up on people who have quit their job and dedicated their time to their own business. Many have said it was the scariest thing they've ever done but the best thing they've ever done. What do you think? is that something you would do? Some people have nothing to lose. I feel like i have nothing to lose but at the same time if I fail at my business i wont be able to pay for my jeep and i will lose it. On the other hand i want to take the leap. i'm unhappy and i have nothing so i might as well take the leap and just do it. It is very scary to quit and job and start your own business but again what have i got to lose?