"Everyone has two choices. We're either full of love ... or full of fear."
-- Albert Einstein
We can almost do everything for love of our family or love of our work. Sometimes this is enough for us.
Other people are afraid to put up a business because of discouragement from people around them. Other people are just afraid to do anything with fear of other people's opinion.
I don't want to argue with these, at both instances, you can always reference to this blog for encouragement and ideas.