One night after an office party, Naina Redhu and her coworker were staring out a window at Bombay’s city lights, when he asked about her job: “Are you happy doing this for the rest of your life?” That simple question became to be a turning point for Redhu, then 24 years old. “I was miserable, commuting three hours each day, being shoved into local trains and cabs,” she says. “My job description entailed sitting at a desk from 9 to…