Main Skill needed for a Home-Based Business

Some people might think you need to have a lot of special skills to start a home-based business. Well there are probably a lot of skills you will need, but many of them can be acquired. What would be the main prerequisite skill needed to start a home-based business?

I think it's the ability to be honest with yourself. You'll need to be able to answer some tough questions before you embark on building a home-based business. You'll need to be able to answer questions such as these.

Is this what I really want?

How will I deal with major setbacks?

Am I willing to spend time planning?

Can I make decisions wisely?

Can I put in 14 hour days? 7 day weeks?

Am I willing to listen to other experts?

Can I adapt quickly?

Those don't take any particular 'skills', but they do require special qualities. What about you? Do you have any self-evaluation questions you can add?