I played sports all through high school and college, and there are so many parallels between sales and team sports. Our executive who leads partnership marketing is a very competitive woman and likes to get those juices flowing in all of us. Whenever someone gets a new client, a broadcast email goes out from her congratulating the salesperson and the entire team that worked on bringing the client in. You always want her to send out an email about your latest sale. And you go out and try to do it.
Salespeople are happy when they have a good product.
You have to believe in the product and the company you're selling. I've learned by error when I worked for companies that had very low profit margins. Your goal in sales is that the more money you bring in, the more you expect to get paid.