Will you allow yourself to be challenged? I think that's the question.
Anybody, fool and genius alike, can defend themselves. Justify themselves. Can effortlessly manipulate logic and reason to see themselves as right in their own minds. Not only is this common and easy, but it is one of the rules of human nature.
All things being equal, you will follow the path of least resistance. Your human nature never wants to take the blame--if you don't conciously militate against it you'll stack the deck in your favor every time.
I was thinking about someone I know, and thinking about how for them their extent of life beyond work is to get home and turn the TV on. For them that is the path of least resistance. And to deviate from that path would be to pick up a book or have a conversation with someone in their family.
I don't have a problem with watching too much TV, but my path of least resistance is to stick my nose in a book when I should be doing more productive things. Reading is my comfort zone, stepping out and doing something is a challenge.
One that I don't really enjoy.
In C.S. Lewis' "Great Divorce" the characters think their feet are being hurt when they step on the grass. The problem was that the grass was real; they had never experienced a reality as real as that grass. It seemed painful to them.
Real power showed up looking like abject weakness. The world was won by losing. Gain will always be disguised in pain.
This knowledge alone doesn't really do anything--I'm still reading too many books.