Most motivation/self-help books are reiterating the same things in different ways. And it's probably okay, because each wording/phrasing can make the message "

Most motivation/self-help books are reiterating the same things in different ways. And it's probably okay, because each wording/phrasing can make the message "click" for different people. Same thing with the timing. Reading something when you're 18 and when you're 30 can be totally different.