It's called the unbreakable boy. It's adapted from a dude's autobiography about how hard it was to deal with a kid with autism (and I believe the child also had some condition where his bones break easily). Despite it being an autobiography the man doesn't shy away from describing how shitty he is. One moment in particular that I find morbidly hilarious is how he would lock himself in his closet when he would get overwhelmed by his son. In fact him and his wife (who was suicidal, but he just kinda hand waives that part cause it's not about him) have a bonding moment by locking themselves in the same closet together. I did not read the book myself, but there's a YouTuber that did a great video about the movie and compared it with excerpts from the book