From veteran online journalist and BuzzFeed writer Doree Shafrir comes a hilarious debut novel that proves there are some dilemmas that no app can solve. Mack McAllister has a $600 million dollar idea. His mindfulness app, TakeOff, is already the hottest thing in tech and he's about to launch a new and improved version that promises to bring investors running and may turn his brainchild into a $1 billion dollar business -- in...