Sorry you're suffering like this Graham - what seems obvious to me - and yet no-one's mentioned it, it's old age mate - join the club
Seriously, Ibuprofin, Paracetamol and Redbull - the panacea cocktail for bikers - unfortunately, my blood pressure has become dangerously high on this particular formula so I may not be the best person to give advice ...
on the other hand the blood pressure problem might be work related stress, but as I'm now working my notice that should correct itself, right ?