Norman Vincent Peal was a REALLY big deal; especially in NYC, back when. Even my mother wanted me to read his book, when I was a kid, but I thought that whole "THE POWER OF POSITIVE THINKING" was junk and refused; unlike the Trump family. Obviously it worked for President Trump.
BTW, did you find post 28 on this thread by dennsw? It's a terrific list of excerpts by Peale from various books he authored? Worth saving!