Thought I’d share my motivation and methods.
My main motivation was that every year at this time of year, I am always full of cold. Winter holidays have been ruined - especially if a flight is involved. I finally twigged that as a regular commuter, I was transferring everyone’s coldy etc germs straight into my insides by chewing my nails. (It’s also a repulsive thought in and of itself!)
Also, chewing my fingers year after year, I noticed that I have been reducing the sensitivity on the tips of my fingers to heat (this might be irreversible).
This year, so far, I am completely cold-free by the start of December for the first time in a decade even though I am surrounded by coughs and sneezes.
My method is telling everyone - including explaining my motivation above - and having bottles of stop it in different places.
I’ve gone 3 months now. Using nail clippers for the first time in my life.
Just thought I’d share - to motivate myself and anyone like me!