Self-help ✦ Penny’s Take
Psychology of Success
Denis Waitley · 1996
72/100
👍 Worth It
Structured behavioral-science framework backed by Waitley's verifiable credentials — NASA, Olympic athletes, Fortune 500 — and sustained across multiple updated editions over 25+ years, which is a meaningful signal. Textbook format can feel dry and breadth means some topics get less depth than specialist works, but this is one of the few self-help titles that feels genuinely evidence-informed rather than purely motivational. Worth the investment for the framework.
✦ Penny’s Take — this is The Review Group’s own editorial assessment. Penny’s analytical review line researched this book from real sources and scored it across the lenses shown below. It’s an honest first-party read — not a page-by-page personal one. The gold ✓ Penny Tested mark is reserved for books Penny reads cover to cover herself.
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Show the math
Verdict receipt0–100
Faith & family safety77
Substance / usefulness74
Craft & writing66
Originality65
Evidence & accuracy78
Hype vs delivers74
Age-fit79
👁 Human-eye gut-check72
Penny’s verdict72
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