Washington Post columnist Michelle Singletary says regardless of income level, the key to successful money management is living below your means. In an Update-1 interview with Bankrate.com senior economic analyst and former NPC President Mark Hamrick, Singletary discusses why even high wage earners have money problems. She talks growing up in Baltimore and being taken in by her grandmother, who taught her valuable financial lessons. She explains the role her grandmother played in the start of her award-winning column, "The Color of Money."