What if achieving your professional dreams comes at too high a personal cost? That’s what screenwriter Patty Lin started to ask herself after years in the cutthroat TV industry. One minute she was a tourist, begging her way into the audience of “Late Night with David Letterman.” Just a few years later, she was an insider who --- through relentless hard work and sacrifice --- had earned a seat in the writers’ rooms of the hottest TV shows of all time. While writing for “Friends,” “Freaks and Geeks,” “Desperate Housewives” and “Breaking Bad,” Patty steeled herself against the indignities of a chaotic, abusive, male-dominated work culture, not just as one of the few women in the room, but as the only Asian person.