Unlock Your Potential with Charles F. Haanel's Complete Course
The timeless 1912 personal development classic - beautifully redesigned for iOS and Android.
The timeless 1912 personal development classic - beautifully redesigned for iOS and Android.
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First published in 1912, The Master Key System by Charles F. Haanel is one of the most influential personal development courses ever written. Originally distributed as a 24-week correspondence course, it has inspired generations of readers seeking to unlock their mental potential.
This is not just another self-help book - it is a complete system. Each of the 24 parts builds upon the last, teaching principles of thought, concentration, and personal power through practical exercises you can apply immediately.
Now experience this timeless classic in a beautifully designed mobile app for iOS and Android - completely free.
The complete Master Key System, beautifully presented - no subscriptions, no paywalls, no ads.
Every word of the original 1912 text, including all prefaces, introductions, lessons, questions, and quotes.
Search across all 24 parts instantly, with found keywords highlighted in context.
Mark lessons complete and follow your journey through the 24-week course.
Read comfortably any time of day with polished light and dark experiences.
Text follows your device accessibility and display preferences for readability.
Each day brings a rotating quote from The Master Key System to keep momentum.
The free version includes the complete 24-part course. A future premium upgrade will add advanced study tools.
Highlight key passages and add personal notes to deepen your study.
Listen to narrated lessons during commutes, workouts, and focused sessions.
Configurable reminders and consistency tools to reinforce weekly practice.
Visualize progress and reading patterns across your full 24-week journey.
Built-in timer for lesson exercises and quiet concentration sessions.
Original meaning preserved, rewritten in contemporary language.
Your feedback guides the roadmap.
features@modernmasterkey.com
A clean, distraction-free reading experience designed for focused study.
Click any screenshot to enlarge
Before any environment, successful or otherwise, can be created, action of some kind is necessary, and before any action is possible, there must be thought of some kind.- Charles F. Haanel, Part I
When Charles F. Haanel first published The Master Key System in 1912, he could never have imagined the millions of lives it would touch. Business leaders, entrepreneurs, and seekers of personal growth have turned to these 24 lessons for guidance and inspiration.
The course influenced countless readers, including Napoleon Hill, who credited it as foundational to his work "Think and Grow Rich."
Modern Master Key brings this classic into the 21st century, making it accessible to a new generation while preserving the integrity of Haanel's original framework.
The complete Master Key System. 24 transformative lessons. Completely free.