How to Avoid Being Blinded By Your Own Design: Seeing the Forest for the Trees
http://experiencedynamics.blogs.com/site_search_usability/2005/06/dr_usability_sa.html

Spillers, Frank
Demystifying Usability
2005

Abstract:

If you design something for your company, organization or department, or help influence the direction of a design, it regularly can become very difficult for you to separate yourself from the design. And chances are, you are not even aware of it most of the time! This entry looks at why this seems to happen and what you can do about it (if anything at all).