I warmly recommend you to read Urban Zoning, a short-story by Kenyan writer Billy Kahora, finalist at the Caine Prize for African Writing. It is about Kandle, a man with alcohol problems, working for a bank, and living a hectic life in downtown Nairobi. A small excerpt:

Stripping in public, cutting one’s palm, thinking you were Knight Rider—these were, to Kandle, examples of letting the Bad Zone overwhelm you. One had to keep the alcohol levels intact to stay in the Good Zone, where one was allowed all the wishful thinking in one’s miserable life. The Bad Zone was the place of all fears, worries, hatreds, and anxieties.

Wonderfully written and fast-paced. Full story is here (pdf).