There really is always something to do when you operate any kind of business. Your mail-order business may not be producing according to your expectations at first, but do not let that cause you to stagnate.
Keep moving and planting seeds into your business. If you feel stuck, then go back to the drawing board. Do some more planning, writing and research.
One way that keeps me from being idle is to use other businesses as a creative catalyst (see Tip #14). As I see them expanding, adding new products or updating their web site, it prompts me to start looking at what more I can do for my own business.