What has helped me with my anxiety was more than SFQ alone. I used many different approaches at the same time.
For example:
Meditation
NLP
Hypnosis
Herbs
Cardio Exercises
Weight training
Hatha Yoga
and SFQ
all of these I do regularly still.
I was prescribed medicine from my doctor but it made me feel sick. So I stopped and was determined to find a natural method or methods.
I feel free from anxiety 90% of the time. I'm still working on it. I occasionally have issues but hey, I'm not Buddha here!
I would suggest doing different approaches and not just one thing.
JEFF