What inspired the author to focus on mental toughness as the key to discipline?
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La discussion entre lecteurs est ouverte maintenant. Un auteur vérifié pourra intervenir après avoir revendiqué ce profil.
What inspired the author to focus on mental toughness as the key to discipline?
Did anyone else find the strategies for building self-control practical and easy to implement?
How do the techniques in this book compare to other personal development approaches you've tried?