Instant Sunday Times Bestseller. Changing your diet may not change your life. But changing how you think about what you eat will. From dopamine hacks to meal-replacements and 'protocols', optimisation culture promises peak health, but leaves us burnt out, disconnected and at war with our own bodies. Amid the noise of macros, hormones, cold plunges and dopamine detoxes, we've skipped the one step that makes any of it matter.