Writing a chapter for a book

Hi everyone, I posted earlier a project to make a documentary movie about how our thoughts are shaping the world around us. The goal of this documentary is for people to understand that they need to change in order to change the world we live in. Our world is not going on the best path and united we can change that. There are more things to discuss about this topic, on how can we do it but this project that I post now is not about that. I thought that is better to have an online book first about the way I see things and my strategy to shift to a better world. So I started to write but at some chapters I think is better to have a professional advice in order to make a great book. I am not an expert in some fields and I`m looking for professionals in specific fields. So, for this project I`m looking for a professional in medical, nutrition, mind field. The chapter can be called: Endocrine and immune system in relation with self-healing. I want to point out the fact that God made our body very complex and intelligent and we can sometimes heal ourselves if we know how our system work and how we can control it. Is good to make a connection also to emotional states of mind. From this chapter reader has to understand and be very confident that if he controls his thoughts he can control his well-being and if you have a good state of mind and health you can achieve the life you want. I want also to show that the pharmacy and vaccine industry along with the health institutions and mass-media are not thinking about our health many times, instead they are thinking about profit. Also to show the benefits of homeopath treatments and healthy nutrition among with self-healing. This book and the documentary will benefit by a big budget for marketing of millions of $ so I really need that the chapter be written very good, to capture the attention and curiosity of the reader and also to be profound and emotional. It has to be "an active writing" , meaning that it had to get the reader involved and take actions. Some examples are good to have as well. I hope I can find the person who can understand what I want and resonates with me. Thank you !