The magic phrase is "Targeted
Diversification".
Expand CURRENT product into other
related products or services that your
market will need.
The key is to provide solutions to your
target market, that are complementary
to what you already offer.
Become a one-stop solution seller and
make backend more money from new and
existing customers.
For instance if you sell an ebook on
ezine publishing, consider expanding
into list hosting service or something
similar.
Remember the five principles above and
really use them in your life and
business. You'll beat your competitors
at any race in no time at all.