1) Mind your manners when it comes to guest. If you are talking behind your clients back or rolling your eyes, If you are annoyed with them even on the other side of the united states on a computer, they can feel it Not only is it really bad mojo. It also is bad energy that you are deflecting onto your customer, your team and your reputation.
2) Retention is key! Is cost you much more to loose a client you already have than to obtain a new one.