I just logged on during a break from work and saw your mention of "How to win friends...etc "....I think Dale Carnegie wrote it. I was just mentioning him yesterday to a colleague in relation to another book of his " How to stop worrying "....I found an ancient stained and thumbed copy on my Mother's bookshelf after she died ( 12 years ago )...these surely must be amongst the first commercially successful self-help books ...and I've never read any clearer or more practical. The religious interludes may not appeal to everyone but they don't detract from the down to earth pragmatism and friendliness of the advice.