These little ones know they're loved. They know it's time to sleep.
1. You ARE loved.
2. No matter what's troubling you, when it's time: GO TO SLEEP. (Whatever you need to work on will be there in the morning. In fact, that which loves you will likely help you resolve it... IN YOUR SLEEP. So chill, and to paraphrase the song, "Goodnight sweetheart, it's time to LET GO!")
Figure these 2 things out & YOU'LL KICK INSOMNIA'S BUTT!!!