What kind of projects are you working on, if you don't mind me asking? I'm currently a full-time UI/UX designer at a firm in Philly but I'd love to go full-time freelance.
No problem, it's a pretty big range of project types that I work on. Two of my clients are in the medical supply field, so I do a lot of 3D animations for their products in use. These can be anywhere from 10 seconds to a full minute.
I also work for a general graphic design studio that calls me in when their workload gets too much for their full time people. I recently did work for a local TV station that needed some motion graphic work for their new TV series they are doing. Often times I work with a company's design division for the length of the contract.
When I made the jump to full time freelance, it was definitely hard at first. I did have a few contacts at the studio I worked full time at so that helped me get a head start. To find more, I met peers at meetups who I collaborated with, met their clients and it kind of snowballed. Repeat clients are the best but when you first start out you may have to take on some less than ideal work. I rarely take on a random project anymore. The more contacts you have the better, companies love hiring contract workers right now.
BTW, I am single and live well below my means so I didn't have a family to support when I made the jump. I'm not sure what kind of UI work you do but if you are web related, or something to do with app UIs then there is plenty of demand for that.