These are great ideas for anybody who has to deal with sales. However, don’t overlook the fact of selling yourself as well. You need to present the best part of the package: you. It’s not something you do actively, but subconsciously. The way you dress, speak, act, and carry yourself are all factors when you’re dealing with a potential customer or client.
Let’s say you’re selling a custom-built PC or web services. If they feel comfortable around you and they feel they can trust you, it helps them realize that you’re not only a salesperson, but you sincerely care for them. 🙂
Plug: I do sell custom-built PCs, and I’m hopefully going to get into selling web services, such as website design.