What are the challenges in starting a business?

The challenges start even BEFORE you start the business, whatever it is.

And the biggest one of the lot is:

Is your mind prepared to be in business?

I've found that the book "Eat The Rhino: Business Idea to Business Plan in 30 bites" ) is a great start to getting the questions you need to have answers to before you even have a business plan.

Naturally, it works best if you have not yet started, the business, but even going business owners can benefit tremendously from it.

Just noticed the questions related to this one. "Eat the Rhino" covers most of these as well - making it one of the most compete business books around!