According to social media, “That Girl” gets up at 6 a.m., eats beautifully presented bowls of porridge, drinks a matcha latte, and works out before 10 a.m. Oh, and she wears exercise outfits. Who wants to be that girl? You, me? Nah, but it won’t harm me to work on myself more and love myself more. So I guess it isn’t so horrible to be “that girl”; I can...