Progressing

What is it in human beings that keeps us stuck at one place? Like my friend who wouldn't leave his stale christian beliefs. No matter how much he claims to want to grow, he is not going to move one bit. It is normal to him, and he sees nothing wrong with it. Even when explained how nazi it is to practice and believe what his church propagates, he still clings to it.

This also makes me wonder about other people and myself too. What is it that we, that I, take for granted that is detrimental for me and keeps me stuck?