If anyone has suffered from serious anxiety or depression will know, this renders you utterly unable unable to function.
I once suffered clinical depression - brought about by a drug I'd been prescribed, but didn't know that was the cause.
I was prescribed strong anti-depressant medication for the depression (until the known cause was discovered) - very dangerous drugs for which I had to wear a medical bracelet... Monoamine Oxidise Inhibitors ("Parnate").
I went back to work - willingly, it gave me a sense of 'normality', but I was so 'out of it' that my employer suggested I take time off!
The prescribed drug that had caused the clinical depression was stopped but I was told to continue with the AD. Having researched it (not easy in the days before the internet) I decided it was too dangerous to continue with it and sared to taper it down. And then got into trouble with my GP for doing so without medical supervision - which they wouldn't give me because they wanted me to continue to take it!
Sometimes, you just can't win.