I've been there....
I used to change jobs...for some reason this acted like a 'reset' for me, temporarily I would be fine at work if not elsewhere...it worked for years but now...now I am not so sure. I was in my late 50's before I took time off because of depression/anxiety/etc, two weeks with a doctor's note (he'd known me many yrs)---it provided a bit of relief but was frightening because I had never done that before...
You may find that others do not notice, or misinterpret what they see. That was generally my experience----when young, I was repeatedly being moved into positions of greater responsibility/authority---which was nerve wracking to me while others would comment on my "calm"----(I wanted to shout "no no not in HERE") with me knowing it would implode for me at some unexpected moment. Now, I find out people were upset that I left, confused by my moving about so much in work, even wanting me to stay...expecting me to stay...
Are you seeing a t? On meds? Have any outlet (I used to find aerobics helpful if done daily---)----really all I can offer is ((((((((((((((((hugs)))))))))))))))))))))