You don't need no book to be confident about yourself. Way I see it, the book isn't gonna give you the power that you never had. If what you're looking for is confidence, then you gotta figure out yourself first. Not "who" but "what" you are, if you know what I mean. Then once you know your place, you don't need a book, you'll have the urge to make yourself clear and make sure you're heard loud and clear. This might not be something people would agree with but it's just what I think and it might help you out so I thought I'd just leave this here for you.