JHL said:I would surely say that emotional mastery and courage
are fundamentals in personal development.
The reason the PD industry is so huge is not because the fundamentals aren't enough for most people to drastically improve their lives, it's because it's human nature to get bored with things and look for something new,
our need for variety - one of the human needs (understanding human needs being another fundamental

). Many people want
the book that's going to be it! This book or seminar doesn't exist for those who don't
apply knowledge on a consistent basis. For those that do, however, just 1 book can be enough.
The upside is though, that I believe everyone will get there in their own time - it's a matter of (subconscious) choice. When a person is truly ready, they can make anything happen. Some people are creating their life, dare I say it, without exposure to any PD material. They have aquired the correct mindset though as thought is the true causative force in life.