One of my favorite sayings is, “You can’t see the picture when you’re inside the frame.” It means that sometimes you need distance and objectivity to see yourself clearly and realistically. Nowhere is this more true than in an obsession with losing weight.Take “The Tongue Patch Diet,” which I learned about in a segment of 20/20. Silly-sounding, it’s truly horrifying. The segment followed two young women who had a doctor sew a rough plastic patch atop their tongues to make it painful and