At the mercy of my brain

Hi. Quick question, I would like to ask you some suggestions on how to go back to feeling grounded and stable during those moments when I am experiencing intense feelings, like a storm of thought and feelings.Here is the model of the other night, whose T line felt really true for 1-2 hours until I decided to distract myself.
C: intense feelings at night
T: I am at the mercy of my thoughts / my brain
F: lost (= victim of my brain)
A: resist – allow – resist
R: not move forward
I am thinking of an argument to the T line or to try to come up with some solid anchor for these moments. Any suggestions? Thanks a lot