In my journey to find out what was wrong with me (I have Aspergers and an Auditory Processing Disorder), I read some 600 self-help and psychology books over a period of 10 years.

While I don't remember the specifics of each book, what is true is that many of those books repeated the same things, and over a period of time I remembered them. So I can write articles like this, more or less from memory, but I couldn't really tell you which book I got it from. :)