This is a section of the book that may answer help - How far is too far? This question is really a code for asking, “How much can I get away with and not make God mad?” It’s not even a question a devoted follower of Christ should be asking in the first place.
Rather, we should be motivated by an entirely different question: “How far can I possibly go to bring joy to the heart of my heavenly Father in this area of my life?”