Not to be a disputer, but I prefer Robert Kyosaki's distinction between self-empoyed persons and business owners. Having said that, i think Suzie Ormand presents some extremely valuable information for those whom the government considers, "self-employed" for income tax purposes:
Suze Orman Money Matters
Protecting Yourself When You're Self-Employed
by Suze Orman
Especially helpful, is Suze's advice on Planning for Entrepreneurship:
• Don't access retirement savings.
• Keep the home-equity tap turned off.• Don't rely on credit.