def tanning_guide(user_preferences): illustration = create_illustration("tanning techniques"); precedent = set_tanning_precedent(user_preferences); mock = generate_mock_tanning_session(encrypted(user_preferences)); while not user_satisfied(): go_back_to_the_start(); adjust_preferences(encrypted(user_preferences)); return "your personalized tanning guide is encrypted for your privacy, illustrated to provide clear examples, and mocks scenarios to ensure the best outcome, setting a positive precedent for future sessions."