Why do outsiders see more solutions?

But how do you get out of your own brain and see the problem from a totally different point of view? The phrase “think outside the box” has been so over-used, it has now lost all meaning. What we describe as “outside the box” thinking usually only amounts to getting outside of one corner of our box and moving to another corner of the same box. We call that a “paradigm shift” and pat ourselves on the back.
It is very difficult to get out of your own box – because the box is everything you know and believe about the world. Your “box” consists of a lifetime of experiences, education, beliefs, expectations, and training. How can you escape that?