Mine are (in no special order) Mondays, Saturdays, (mornings especially)
Medical articles
Holidays
Bathing or showering (inspections)
Too much sleep or too little sleep. 7 hours seems to be ideal but 6 or 8 or more? Forget it!
In summary I would say that anything that is different in my schedule will get me going. Also, anything that forces me to deal with touching or looking at my body.
Finally, reading any article about cancer will often set off my wild imagination in a bad direction.
I wasn’t always THIS bad (above) but I would have times during the year when I would fall into the worry pit. I’ve been in it, pretty much for 10 months now and I’m damn sick of it but can’t climb out.
I started going to a psychologist for neurofeedback but he hasn’t decided if its right for me so I’m doing biofeedback now - once a week.
It only uses one sensor on my ear and I try to relax my mind into a calm state with the doc observing and making notes. Purpose is to learn strategies to relax myself when I have hit on something that triggers my fears.
I may work up to neurofeedback but it will take a while.