How Brandy came to write an advice column called "Ask a F*ck-Up" ... Young people's problems: depression, alienation, loneliness ... Brandy's central theme: the responsibilities we bear to each other ... Can "bad men" change? ... The different questions men and women ask ... Brandy: A "sex strike" would never work ... In defense of being in your own Twitter bubble ... Why are there so many depressed people on Twitter? ...