People who readily accept the need for a gym will resist that their personalities might need some work too.
The largest part of what we call 'personality' is determined by how we've opted to defend ourselves against anxiety and sadness".
Our jobs make relentless calls on a narrow band of our faculties, reducing our chances of achieving rounded personalities and leaving us to suspect (often in the gathering darkness of a Sunday evening) that much of who we are, or could be, has gone unexplored.