Book Writing Process

It is hard sometimes to get a book off the ground. But I have my topic in mind and just need to flesh it out. I am wondering if a title should be the start or if the title should just come as I am writing it. I do not know. But the book is definitely going to be about autism and what it is like living with autism. And I honestly have no reason to believe that it is a tired subject because honestly there should be more books written from the perspective and the insight of someone who has autism. We have a few and they range from Temple Grandin to Carly Fleischmann (she is my inspiration for wanting to write my own book) to Naoki Higoshida (also an inspiration for me). I want the world to understand what is like being diagnosed later in life and to understand the challenges and even the blessings I have experienced along the way to my diagnosis and after my diagnosis. I want to encourage people to never give up on their dreams and aspirations. I want to make suggestions for people who might be interested in launching special needs ministries and other community based programs. There are a lot of things I want to cover. Anyway, I just wanted to get a few thoughts out.