1) Do what you love.
You're going to devote a lot of time and energy to starting a business
and building it into a successful enterprise, so it's really important
that you truly deeply enjoy what you do, whether it be running fishing
charters, creating pottery or providing financial advice.
2) Start your business while you're still employed.
How long can most people live without money? Not long. And it may be a
long time before your new business actually makes any profits. Being
employed while you're starting a business means money in your pocket
while you're going through the starting a business process.
3) Don't do it alone.
You need a support system while you're starting a business (and
afterwards). A family member or friend that you can bounce ideas off and
who will listen sympathetically to the latest business start up crisis
is invaluable. Even better, find a mentor or, if you qualify, apply for a
business start up program such as The Self-Employment Program. When you're starting a business experienced guidance is the best support system of all.
4) Get clients or customers first.
Don't wait until you've officially started your business to line these
up, because your business can't survive without them. Do the networking.
Make the contacts. Sell or even give away your products or services.
You can't start marketing too soon. (See Attracting New Business on a Shoestring Budget and The 7 Best Places to Find Clients for tips.)