Should I write a book?

I’ve had several traumatic experiences- witnessing close family battle addictions and multiple mental illnesses, battling my own addictions and mental illnesses with eating disorders, late diagnosed autism, my battle with trying to conceive and being in a previous abusive relationship, and then finally having a family and everything falling into place only to have the love of my life pass away and get stuck at rock bottom. I’ve been told by a few people to write a book about it. I’m not sure if it would be worth doing though. Has anyone else published a book? Can you do it anonymously?