There are many "addiction memoirs" in our collection. Some are funny, some are bleak and despairing, some a combination. Try these titles:
"Junky" by William S. Burroughs. May be the first book in this sub genre of memoir.
"Go Ask Alice" by Anonymous. A young adult classic and a cautionary tale. The diary of a young woman chronicles her descent into addiction.
"Manic: A Memoir" by Terri Cheney. A successful lawyer recounts her struggles with a biopolar disorder and substance abuse.