Starting with age 5, have a family rule that your child makes their bed every day--and then don't fix their work. This post has 100+ ideas to help you tame the chaos in your home (and your life)--this is just one tip! These are really great tips for the whole house!!
Parenting Tips Have a Happier Life with Young Children: Routines, Quality Time, Follow Through, Let it Go, Slow Down, Play.