Not turning you off or anything but you asked, and here's a few things I'm sure you already know:
Your not a home owner: It took me several years and several attempts to acquire a mortgage although my employees never had a problem, you see self employed are not secure investments, You are not entitled to anything like teeth,medical,or unemployment benefit or the old age contributory pension nor is your wife or Dependants entitled to anything, If you are 7 days late with tax returns or especially vat assessments you will get a 7 day warning then you will have the sheriff at your door to collect, Yes time is your own and you wont have someone breathing down your neck but you will find that you will be doing a lot more hours than you did when on a wage, I do a normal day away at work, then every evening and at weekends I do bookwork,I spend hours pricing work that I never hear of again. The most important thing you must be is a go getter and not lazy or you can't be the sort of person that waits for things to happen, you must be the sort of person that pushes and chases all the time and still be able to show good spirit even when your down.You should see me on a Monday (a live wire) by Fri I'm recked. I'm self employed for 30 years and have had some really bad times and some great times. I believe a lot of it is to do with money,If your making good money things seem to go well and if your not every thing goes wrong. The only other thing is the tax man and everyone believes all self employed are are rolling in it and believe me its not always like that, Remember nothing is for free.