I think you are describing me there. For 2.5 years now I live in a constant state of anxiety. 24/7 almost. Only at night I feel better till I get up and start my day. Then it`s back to full on anxiety symptoms for the rest of the day. Fog, can`t concentrate as I used to, feel tired, have problems in bright light ( confusion kicks in big time), make mistakes finding the right words when speaking, etc. Of course I do start worry about these symptoms which in return makes it all worse and never stop. I know my main anxiety is health related, first fear of Mad Cow disease back in 1999, then cancer from 2007-2012 and then from 2014 till now I really worry about dementia. In between I do worry about my kids health too. Afraid of flying too, so a relaxing holiday in exotic countries is out of question.