You know you're ready to write a book when you have a feeling that you should do it, no matter what anybody says. It's like falling in love or starting a company. When you're still wondering if you should get married or you're still wondering whether you should start a company that might be not the right person or the right idea. And writing is the same way. When you've locked on to the topic, you'll just write it.

Look back to the old days: people bought an MS DOS machine and struggled with it for weeks to bring it up to speed. Then Apple created Macintosh, struggled a bit with it, but eventually succeeded. Then it went into other businesses. If your company truly wants to change the world, it would make these problems go away for customers.

Remember that nobodies are the new somebodies.

Arguably, in business books, I don't think there's much that has never been said before.

Enchantment is the purest form of sales. Enchantment is all about changing people's hearts, minds and actions because you provide them a vision or a way to do things better. The difference between enchantment and simple sales is that with enchantment you have the other person's best interests at heart, too.

If you look at my Twitter feed it is 99% links, but 1% is me responding and 1% of a big number is a big number.

You know in a startup, you only need three people. You need someone who can make something. You need someone who can sell it. And you need someone to collect the money. That's the only three roles in a startup. So which one are you?