I have this issue to a degree from the benzo withdrawal symptoms I'm experiencing, though I have difficulty experiencing emotions for reasons I have yet to fully identify.

The over the counter stress relievers I have been taking start to wear off towards morning and I've been waking up repeatedly throughout the night often from profoundly disturbing dreams, especially after titrating down my dosage or when I've been under greater stress than usual during the day. I'll often stay awake thinking about the dream, with what I believe qualifies as anxiety.

Sometimes I manage to resolve to go back to sleep, at which point I'll engage in non-directive meditation to quiet my mind. Sometimes I'll get up and eat some Greek yogurt, the lean protein helps me relax, even though I'd rather not eat during the night.