I was catching up on some blog reading tonight and ran across a post by Bob Parsons (formerly of Parsons Technology, now CEO of GoDaddy Software) where he lists his 16 Rules to Live By. Applicable to life in general as well as business in particular, these 16 rules are well worth reading and applying if you have any intention of being successfully self-employed.
(And in the interest of full disclosure, yes, I use Go Daddy's domain registration services.)