The Master Key System di Charles F. Haanel, 2023, Youcanprint

Note:
This is a book that will not only make you feel good, but also think good. In The Master Key System, presented as a series of twenty-four lessons, Charles Haanel discusses everything from how to feel healthy to how to become wealthy.
Using precise logic and a consistent, common-sense structure, Haanel shows us how to achieve what we most desire.
The Master Key System is said to have inspired Bill Gates to leave Harvard and found Microsoft.