Seems as though the common theme among some of the best network marketing trainers early in the new year is "belief".
Randy Gage just recently started a post series on belief. One of which was "Building Belief Bigger than the Grand Canyon" where he shares how to build strong belief and an assignment of viewing a video per day.
Tom Challan just sent me a great video about belief. I highly suggest you get on the email list of both of these trainers as they always supply strong training material.