Having owned a few businesses,where I was dealing with dep motions, like real estate and interior decorating, I certainly have experienced a great deal of stress. However I had a great mentor who taught me how to relax, when that panic phone call came, with my customer,screaming, "Stop everything I have changed my mind." You take a deep breath and calmly say, "I'll be right over." Meantime as you start to sweat, get in your car and start seeing the thousands of dollars going out the window. You take a deep breath hold it a few seconds as you breathe out thru pursed lips see a 3 flashing before your eyes, do this again with a big 2 and again with a big 1, You will become quite calm and know you will save the deal. It really works. Try it!