The concepts explained in The Power of Your Subconscious Mind PDF book are not the simplest ones. But however, Joseph Murphy is a higly-skilled in making such kind of material easy to understand and implement in practice.
I found this book very helpful - Joseph Murphy is a great teacher and writer. Probably The Power of Your Subconscious Mind is the one of the best on the topic
Paul D. Matteo GarciaParis
Joseph Murphy is the best! The Power of Your Subconscious Mind is certainly a good one for MBA students