If you apply the material, then I'd say yes. That's what those books are about anyway. They give you advice and, if you take that advice and use it in your life, then it should help.
But, I think it's important to know that merely reading a book doesn't do much for you. When we're talking about a deep-rooted problem like social anxiety, reading books isn't going to change you. The book can guide you on the right path, but that's all it does. It shows you the path and then it's your choice to take it or not.