Many people are very comfortable with where they are…
Many people are very comfortable with where they are at, and have no desire to get out of their comfort circle or comfort zone. The single quality that is most important for getting out of your comfort zone or fear circle is the ability to say that I am wrong or the ability to admit faults. Once someone can say I am afraid, most of the fear will dissipate. It is generally a an issue for people that do not have the the confidence or self worth to admit or be vulnerable to imperfection.
— from The Heart in the Cockpit (Emotion/Awe/Anxiety/Regret/Empathy)