Ever since the birth of mankind, humans are trained to observe and follow.
When football coaches get their first job, they are given the role of an assistant coach with their alma mater or a team they once played with. After a couple of years, when they get promoted, they tend to replicate the same drills that they learned from their coaches.
Our political and religious beliefs are largely inspired by our parents. Similarly, the way we work is a result of what we learned from our last mentor.