Question: Which film directed by American film and television director is based on a self help book?
Sentence (from "He's Just Not That into You (film)"): He's Just Not That into You is a 2009 American romantic comedy-drama film directed by Ken Kwapis, based on the self-help book of the same name by Greg Behrendt and Liz Tuccillo, which in turn was inspired by a line of dialogue in "Sex and the City".
Relevant evidence: Yes