Send out a cheerful, positive greeting, and most of the time you will get back a cheerful, positive greeting. It's also true that if you send out a negative greeting, you will, in most cases, get back a negative greeting.
Zig ZiglarWhen you are truly interested in other people, you will learn what they are interested in and if they have a need for your product. If they like you, and most people like folks who take an interest in them, they'll help you find people who do need what you have to sell, even if they don't.
Zig Ziglar