A lot of people – and this is in the marketing and fashion industry, as much as any other – hold onto a consideration that they already know all about what works and what doesn’t. This is a big barrier that lowers their ability to observe and prevents them from learning new things. People who consider that they already know all about something see no point in looking at it freshly.
I read an article at http://fashionablymarketing.me that lists 11 steps for Fashionable Success in 2011, and all the points are really good and true. But an important 12th point should be :- Don’t ever consider that you know all about something – especially in fast changing areas like marketing and fashion.