I am always amazed at how many people who desire to be successful look for ways to come to work late and leave early. At 4 PM on a Friday afternoon it is shocking how many marketing and sales professionals have already headed home.
There is always some activity that you can complete. Time is such a precious comodity in our busy, busy society. To skip out early on Friday means that you have to make that time up the following week.
I used to work with a sales guy who was always gone on Friday. His performance showed it, too.
Use your work time productively. Focus on business development. Just do it.
PS- Do you enjoy reading books? If yes, then I hope you will enjoy my book that will come out in July 2005. "Some Assembly Required" is a book on how to make, keep and grow business relationships. More info to follow at www.thomsinger.com.