OK good result is that in 1,5 year you are still physically fit, despite on trembling, twitching etc. As we all can see, ALS does not wait 1.5 years to make its destructive job. I had seen some documentary recently on the sports tv and I was again stunned by the fact how fast ALS turns strong man into a wheelchair patient (practically in a year or so).
So good news are you do not fit clinical picture.
If mindfulness training does not help you to be free of fears, it just means you may try any other method.
GAD and obsesive diseases are with us once and forever. it is like diabetes. So not only you should expect 'not having fears any more' (this is unrealistic) but also be alert and every time you find yourself in fears again, consider what was changed. it is like diabetic who makes his daily blood test and finds high sugar - he or she must ask herself or himself - what had happened? too much of apples? too much of pasta? a piece of bread? no workout today? missed insulin shot or urea pill? expired drugs in my pen? a flu? - and take proper measures.
We are absolutely the same, just the answers are partly different. Bad sleep. Infection. Too much of beer few days ago. New assignment on the job. A task we have to do but are reluctant to perform. Etc. etc. Everything which causes tension or inconvenience may result in twitches and in fear of twtches.
Look. Search. Think. Do not forget it is a chronic condition. take fear as a symptom, not as a fear itself.
Wish you a good resolution of course
hugs
Yulia