Every success story is a tale of constant adaption, revision and change.
A good idea for a new business tends not to occur in isolation, and often the window of opportunity is very small. So speed is of the essence.
Find somebody else to run your business on a day-to-day basis.
Not enough people realize the satisfaction you can get from really pushing yourself to the limits.
The risk is worth it. Mike would have been the first to say that.
Everything in your business can be outsourced... if you're not emotionally attached to doing it all.