The Gospel & The cult of self

The essayist Kate Andrews wrote in February 2023: "When the sun comes up to greet you, you should not be rising with it, but rather already 60 minutes through your affirmations in your bedroom mirror (‘I am strong, I am beautiful’). If you dare deny how wonderful you are before the rooster crows, you have committed a cardinal sin. These are the rules in the new cult of self-love.”

The Cult of Self-Love -- also known as Selfism, Selfist Psychology, Selfist Philosophy, or Meism -- has taken over our culture, and nothing but devastation and depression have resulted. What is "the cult of self-love," where did it come from, and what does the Gospel have to say about it?