[mooders]

Geoffrey Moore's Crossing the Chasm

Bosworth/Holland's Customer-Centric Selling

[davidw]

Crossing the Chasm is a good book, but as a sales book for a freelancer?

[mooders]

Definitely - if you don't understand the market, the motivations for purchasing, the product development lifecycle and so on, how can you possibly sell anything beyond brute force and willpower?

[davidw]

If you're selling your time, you are pretty much selling 'brute force' by definition, rather than a product.