"How to Reassess Your Chess, 4th Edition was designed for players in the 1400 to 2100 range." - IM Jeremy Silman (2010)
https://web.archive.org/web/20140626180930/http://www.chesscafe.com/text/heisman06.pdf
Might want to consider Amateur's Mind by Jeremy Silman.
https://web.archive.org/web/20140708094419/http://www.chesscafe.com/text/ammind.pdf
https://www.silmanjamespress.com/shop/chess/amateurs-mind-the-2nd-edition/
Found a copy of this book today. I did read the first few pages and stopped. I realized Reading it that I need to give it my undivided attention. So I'm gonna bust out my board and start over tomorrow. I may not understand it all or absorb it all but I can already tell it's gonna make difference.