I have been through much of what I read on this site, but what helped was when I realised that when anxious my mind was good at making up stories ( worry).
When I feel my head " going off on one" I smile and say to myself " is this you making up stories again", through time your subconscious will get the message .
But note it also tells you, when this happens that you are tired, and need to make some relaxation time...look after yourself, and when you are well give some time to others who are less fortunate....