It's not about suicide, but this made me think of The Diving Bell and the Butterfly.
The Diving Bell and the Butterfly is probably the book I have recommended more than any other.
> "In 1995, Jean-Dominique Bauby was the editor-in-chief of French Elle, the father of two young childen, a 44-year-old man known and loved for his wit, his style, and his impassioned approach to life. By the end of the year he was also the victim of a rare kind of stroke to the brainstem. After 20 days in a coma, Bauby awoke into a body which had all but stopped working: only his left eye functioned, allowing him to see and, by blinking it, to make clear that his mind was unimpaired. Almost miraculously, he was soon able to express himself in the richest detail: dictating a word at a time, blinking to select each letter as the alphabet was recited to him slowly, over and over again. In the same way, he was able eventually to compose this extraordinary book." https://www.amazon.com/Diving-Bell-Butterfly-Memoir-Death/dp/0375701214
Pretty sure the guy in The Diving Bell and the Butterfly who couldn't move anything but one eyelid still had feeling in his body.
Source: I read the book and watched the movie. It was 7 years ago though so my memory is hazy.
The Diving Bell and the Butterfly, a memoir written by Jean-Dominique Bauby, who lived in locked-in syndrome for a bit more than a year after waking up from coma. The entire book was written by Bauby blinking his left eyelid, which took ten months (four hours a day), according to wikipedia.
Consciousness and the Brain: Deciphering How the Brain Codes Our Thoughts, a book written by Stanislas Dehaene, a neuroscientist who works on consciousness, in which he summarizes his research and the current state of knowledge on the topic.
Although we're still very far from understanding the complexity of our brain, I think it is relatively safe to say that the "mind-body" debate is over now, you are your brain.
The Diving Bell and the Butterfly! https://www.amazon.com/Diving-Bell-Butterfly-Memoir-Death/dp/0375701214
Death, frienship, growing apart, huge life events try this: https://www.amazon.com/Diving-Bell-Butterfly-Memoir-Death/dp/0375701214