In a recent post by Seth Godin he talks about being "irrationally committed".
http://sethgodin.typepad.com/seths_blog/2008/09/irrationally-co.htmlI translate that to mean - you sometimes have to be a little crazy to succeed. I think that really applies to small business. You have to be willing to take that one-more-punch. You have to be so "committed", that many people will probably think you are irrational.
But that is what separates the greats from the also-rans.