Someday you will miss this

It's 4 a.m. My baby is awake again. She has nursed and fallen asleep...and then woke up again the second I tried to move her. Now she is wide awake, eyes open and smiling at me. I am exhausted -- beyond exhausted. And I have to be up in a few hours to take my son to school. I really feel like I can't handle this much longer. I just want to sleep. Then suddenly a thought pops into my mind: Someday you will miss this.