In the book, "Tuned In" by Craig Stull, Phil Myers, and David Meerman Scott (y'all know how much I love David Scott's books), the authors say one single line repeatedly.
"Your opinion, while interesting, is not relevant."
By this the authors mean that when it comes to knowing what will and won't work, what does and doesn't resonate, and what can or can't make your business a success, you simply cannot rely on what you alone like. You MUST ask your target audience for their opinion.
I recently experienced a perfect example of this in action.