Matt,
I done what David is suggesting, Had a office job, so Nov last year started doing windows and some gardening, got leaflets printed and started chucking them out so by May I went for it. All the money I had went in to the bank as my cushion so when May came I had 4 months of bill money saved, Now im all legal paying tax and have actually knocked the gardening on the head just w/c.
Take each step and have a plan
Paul