Here are some quotes about not being able to sleep:

- "If you can’t sleep, then get up and do something instead of lying there and worrying. It’s the worry that gets you, not the loss of sleep." - Dale Carnegie
- "Every closed eye is not sleeping, and every open eye is not seeing." - Bill Cosby
- "There is a time for many words, and there is also a time for sleep." - Homer
- "The night is the hardest time to be alive and 4 am knows all my secrets."
- "Sleeplessness is a desert without vegetation or inhabitants."
- "Sleeping is so hard when you can’t stop thinking about someone."

I hope these quotes help you in some way. Let me know if you need anything else.