i have one technique that works for me. its kinda unique but it works.
one day when i was triggered and about to go over the edge he smacked a tuning fork against the table. it suprised me and the resonating sound made my mind go blank.
now, when i need it, i use a tuning fork and just concentrate on the sound it makes and the vibrations in my hand. it really helps me to "clear" my mind.
its unique but it works and i hope it works for someone else. thanks for reading.