Have to agree with Brady on the books, but I think time can be spent better than watching "The Secret".

Do a search for threads started by Eugene King. He has written many about how he markets. Go through them, read them, re-read them, that call and talk with him. That along with some self confidence and you should be on the right path. Remember, information is only part of the process. You actually have to go out and sell.

A good book I just finished is "To Sell Is Human" by Daniel Pink. Lots of material on how selling has changed and how to sell in today's world.

Just my 2 cents...