Bründl's school of life has taken me forwards, in my professional and private life. To be honest, you can only progress if you change your perspective and disrupt your routine. And, ultimately, it's not really the product that determines whether the customer comes back, but whether the customer has been moved emotionally.
That's what makes the training so unique: sharing values, this positive change in people's relationships. I recently had a conversation with my son. My wife listened to us and said, "Manfred, I really didn't know what a good listener and mediator you are."