This one is very worth your time. It’s a speech from 1963 by Napoleon Hill regarding having a positive mental attitude. It was filmed as well so there are both video and audio versions.
Private Video Link:
https://vimeo.com/527048167/b89a3ec8e7
Private Audio Download:
https://www.mediafire.com/file/zlrspr5ychujhs2/NapoleonHill_PositiveMentalAttitude.mp3
The highlight is when he concludes with his “12 Great Riches for Life.” They are: