Phrases Talking About Stress or Anxiety

I'm feeling burnt out.

Meaning

I am exhausted from prolonged stress.

John: You seem a bit drained.
Alice: I am. <b>I'm feeling burnt out</b> from working too many hours.
John: You need to take some time off. <b>I'm feeling burnt out</b> myself lately.
Alice: I know. I'm going to try to schedule a vacation soon.