I'd agree with getting professional help for the simple reason is that they probably have greater experience and know a wide range of tricks and techniques you

I'd agree with getting professional help for the simple reason is that they probably have greater experience and know a wide range of tricks and techniques you can try and when to try them. Books can be a one size fits all approach that is more of a recipe approach so it is difficult to judge what advice to follow and more especially if the first few ideas fail to generate any results. Also having someone around who is not also sleep-deprived (hopefully) and so thinking clearly is only a good thing.