I've been self-employed for about 4 and a half years, as a qualified horticulturist, basically doing garden maintenance for elderly people who know their gardening and plants, but who are unable to do it themselves any more. They like the fact that I know what I'm talking about, and also some of them feel safer because they're elderly women who live on their own and I'm a only a little girly!!
There's not really a lot else I can add to the comments that have already been made, other than to say ...
Get a fantastic accountant!!!!!! (Saves time doing your tax return, costs a bit but I promise it's worth it for the amount of hassle saved!))
Make sure you keep up to date with your paperwork. (That's my downfall I will admit!! Lol!)
Always believe that you can make it on your own and keep the motivation that you start out with! (It took a couple of years to get my business going and viable, but now it's doing well.)
But, at the same time, don't kill yourself working too hard! I made that mistake when I first started, I was working six and a half days a week, all the daylight hours that God sends, and I finally had to admit that I couldn't cope with it any more. (I put a vertebrae out in my back, and broke my thumb ... lesson learned the hard way I think!!
I will agree that having a bit of spare cash behind you, preferably enough to cover the bills for at least a few months, is a brill thing to have. It just means that there's a bit of back up if business is slow for a while. And also, when you get going properly, keep a sacred stash somewhere, that is only used for emergencies if you really REALLY need it.
Anyway, enough of my rambling ... if you do decide to go for it then .....
GOOD LUCK to you, and I wish you all the best!!!
Quote ... "You've got OCWD ... Obsessive Compulsive Weeding Disorder!!" Well ... I am a BSc Horticulturist .. what do you expect?!?!