One of my favorite explanations for shoshin comes from Master Yoda, when he says to young Skywalker, “You must unlearn what you have learned.” If you are unwilling to accept a beginner’s state of mind, then how could you possibly ever learn anything? This doesn’t only mean learning some new physical action, it also, and more importantly, applies to learning about yourself, your true self.
Intelligence, knowledge, wisdom, expertise, all those things can be just as much a hindrance to you as they can be a benefit, especially if you think and feel that you are dependent on them as a person. You do not have to be. Adopt the state of mind that you had before you had any of those learned things, and you can better understand the person you really are, and in turn, be the person you really want to be.