I Can write this book in 2 days no questions asked. I'm Canadian so communication will be A1, i'm also a passionate of self-help since my teenage years. From Tim Ferriss, to Elliot Hulse, to Real Social Dynamics, to Nathaniel Branden, I've seen it all.
Just let me know what kind of self-help book you'd like and on what topic and I'll do it. Otherwise, I can come up with my own ideas and cook up something original.
Let me know.