It's important to reinforce children's good behaviors with praise.
Hank's son was normally a slob but today he cleaned his room properly.
Hank wants to decide what to tell his son.
Hank praises his son for cleaning his room this time.
Hank does nothing since it's something he's supposed to do anyway.
Hank's son starts to clean his room more often.
Hank's son goes right back to being messy as before.