Most small business owners are not particularly sophisticated business people. That's not a criticism; they're passionate about cutting hair or cooking food, and that's why they got in the business, not because they have an MBA.
Hire great people and give them freedom to be awesome.
A lot of people can raise money.
In terms of fear, I still am most afraid of Freddie Kruger.
You're building a tool, not a piece of art. Don't be blinded by the vision.
I just like to build things and do things.