When I first got diagnosed with PMR my physiotherapist told me to keep a diary of what caused it to get worse and it became apparent really early on that stress was one of my biggest contributors - but stress (and anxiety for me and obviously you too!) are part of life. So, as someone else has mentioned here, I try to keep expectations to a minimum and organise life so not too much is happening all at once if I can. Sounds boring but it helps keep a lid on things! And I find yoga and guided meditation really helpful too, I'm not sure if these are for everyone but they definitely help for me.