Tweak is about the author, Nic Sheff's real life struggle with drugs. It's one of the most intense books I've ever read! I highly suggest it to anyone. Nic Sheff's father, David Sheff has also wrote a book about his sons addiction through his perspective. It's called Beautiful Boy. I'll be reading that one next.
Read that like 2 years ago... LOVED it. So interesting knowing his girlfriend in part of the book was a celebrity... forgot her name though?
I've read this book and, though his writing style is kinda addictive, I really didn't like this book.