What preparation do you do before a big call or presentation with a customer? What do you say to yourself before that meeting?
Whether you know it or not, how you perceive things can have an effect on your overall behavior. Your perceptions (of co-workers, customers, situations, etc) for your attitudes. Those attitudes set into motion how you act or re-act to those people or situations. So if you perceive that your boss is a miserly old tightwad, that will mean you will act accordingly. However, if you perceive that your boss is being wise with company assets then your behavior will likely be different.
Tessa Stowe over at The Side Road had a good post on talking to yourself before a meeting. What can you say to yourself so that you come accross authentic, energetic, relaxed and committed instead of nervous, pushy and desparate? Check it out!