We'll I admit I have not read books by noted defense authors like Ayoub or Grossman ( both spelled wrong) but I did read the book by Gavin DeBecker " The Gift of Fear" I saw it used on amazon for $5.00 I highly recommend this book at least the first three chapters. Talks about people seeing things that are just not right and being aware of surroundings . Like guys in hot weather wearing long heavy coats, tatics bad guys use to lure you into trusting them and how some bad guys are experts at pretending they are someting that they are not. It is a MUST for women to read. Does not replace books on self defense from other good authors. One more point of view about the world we live in. I loaned it to some one and can't remember who so I'm looking for another copy. You won't be sorry you read it.