Sleep and your frame of mind
Sleeping well helps our mood and our moods can affect our ability to communicate properly. Have you ever wanted to say something to your partner but waited until they were in a better mood?
Check out this good article from the New York Times:
https://www.nytimes.com/2017/09/04/well/family/relationship-problems-try-getting-more-sleep.html
Have you ever started a conversation incorrectly because of your own sour mood?