Have you ever read a
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Prelude-in-C-maj — 9 years ago(October 07, 2016 11:11 PM)
They "work" only entirely depending on the reader's sincere application.
There are good and bad self-help books depending on the type of help and heavily depending on the writer but the biggest element is the reader.
Even the best advice isn't going to work if the person just fails to implement the advice and techniques.