The Dream of a Ridiculous Man:

A short story by Fyodor Dostoyevsky written in 1877. It begins with a man walking St. Petersburg's streets while musing upon how ridiculous his life is, as well as its distinct lack of meaning or purpose. This train of thought leads him to the idea of suicide, which he resolves to commit using a previously-acquired gun. However, a chance encounter with a distressed little girl in the street derails his drastic plans.