sob (oneself) to sleep
1. Literally, to weep uncontrollably until one falls asleep. I was so upset after the funeral that I sobbed myself to sleep that night.
2. By extension, to be upset by or distraught about something. Typically used sarcastically to mean the opposite. I'm not thrilled with that grade, but it's not like I'm going to sob myself to sleep over it. Yeah, I'm sure that actor is really sobbing himself to sleep over a single bad review!
sob oneself to sleep
to cry until one falls asleep. He sobbed himself to sleep for days after his grandpa died. The child sobbed himself to sleep night after night.