Discovering Buddha Nature
Hope everyone is well. I was thinking, if We all have Buddha nature and coming to the realization of that is the essence of Buddhism, why did our past Buddhist monks, priests what have you do things like sit in front of wall for years, starve themselves and put themselves through masochistic actions in order to realize this. In Dogen's time I believe this was the normal practice and please correct me if I'm wrong. Do other schools of Buddhist thought still practice similar endeavors?