My grandkids fight bedtime with their parents. They fall asleep in minutes for me, and I try not to be smug about it.

The author has a knack for getting her grandbabies to fall asleep. Courtesy of the author My adult kids often ask me to take over when their children won't sleep. I follow the parents' routines while staying calm and adjusting to each child's needs. Sometimes I walk out of the bedroom with a…