Kiss, hug, monkey blanket, book, pray. That's the summation of my preschool-age son's bedtime routine. His simple bedtime routine must mean the world to him because if I miss a beat or shake up the order, he lets me know that the universe is falling apart. If you want accountability for keeping a disciplined routine, just let preschoolers know of your intentions, and they will tirelessly remind you to stay the course.
Order and predictability go a long way to reassure young children that their world is stable. Routines work the same way in reassuring us big kids, too. Consider how disconcerting your morning would be if the coffeemaker suddenly sputtered sparks onto the countertop and broke.