Which one of your kids do you love the most? Anyone who actually answers that question obviously has no future in politics. In a similar way, authors, down the road in their careers, are often asked which of their books is their favorite. The stakes are lower, but the dilemma is the same. Books are like your kids.
Any book, at least any book worth writing, comes straight out of the marrow of your bones. If it gets a “good report card” from the critics, you glow—and you are tempted to show that review around like endless baby pictures. One bad review, and you metamorphose into mama bear facing down the bully who stole your kid’s lunch box—even if the critics are right.