My personal rule zero is to smile a lot. No matter who it is that you're speaking to, a smile make you instantly more likeable and trustworthy. It's tough to ge

My personal rule zero is to smile a lot. No matter who it is that you're speaking to, a smile make you instantly more likeable and trustworthy. It's tough to get used to (especially if you're the kind of person, like me, who frowns as their natural expression). I think of it like this though: no matter who it is that I'm speaking to, they're taking time out of their lives to listen. A smile shows appreciation of that. (Not to mention that smiling a lot helps you live longer [1].) [1] http://www.ted.com/talks/ron_gutman_the_hidden_power_of_smiling.html http://www.ted.com/talks/ron_gutman_the_hidden_power_of_smil...