Niche is a time-honored business term and an ancient idea. It literally means a "pigeonhole," and derives from the Latin for nest.
Finding yours means your craft never has to compete on price, because your flock needs you/relies on you/likes you/talks about you/cares about you.
Take, for example, Joe Smith, an ornithologist, independent researcher and top blogger for The Nature Conservancy.
Because he practices his craft with skill and diligence, Joe Smith's flock needs him/relies on him/likes him/talks about him/cares about him.
"There's no such thing as a niche that's too small if the people care enough," Seth Godin also says.
Have you found your niche?
DISCLOSURE: Joe Smith is my son-in-law. Check out Cool Green Science.