I had managed to make this transistion from permanent employement to contractor + enterpreuner 'on my own'. After I made the decision and the transition had started I felt the need to educate myself futher. So halfway I read many books on work/life/business/self-help and the two that (imho) helped more on this direction were:
1) What the Most Successful People Do Before Breakfast
1) What the Most Successful People Do Before Breakfast
2) The 4-Hour Workweek