Antidepressants are very good, but it's a clinical cosh, really. Sometimes you have to be knocked out, just to stop; when you're in that state all you want to do is just sleep, and rest your body and your brain.
The neurochemistry of the brain is astonishingly busy, the circuitry of a machine more wonderful than any devised by humans. But there is no evidence that its functioning is due to anything more than the 10(14) neural connections that build an elegant architecture of consciousness.
Don't we introduce time as a means of becoming more evolved? The brain has evolved but is there evolution inwardly? Can the brain dominated by time not be subservient to it?
Conscious attention is a designed function of the brain
which scans the environment for any trouble making changes.
If you identify yourself with your trouble shooter, then naturally you define yourself as being in a perpetual state of anxiety.
I'm newly widowed, so I've gone from having a life partner, and having another brain to make decisions with, to doing it all on my own and questioning what I'm doing. I have to be a calmer person, because my anger can look pretty terrifying to a young person.