The very first step that many will tell you is to breathe.
Why breathe? Because if you take three or more breaths, you have
done something which creates a trance, according to the model.
So that means that you become just a tiny bit dissociated.
And that means your consciousness is split into two parts:
the part which is breathing, and another part which is experiencing
the strong emotion.
So, then, that is the very first step: to do something like breathing
in order to get slightly dissociated. This results in 'you' stepping
away from the strong emotion to a certain extent. By 'something like
breathing' I mean it could also be clapping your hands, playing a
drum, singing something over and over, or meditating. or jogging.
Any of these repetitive actions will result in a slight dissociation
which makes 'you' separate from the strong emotions 'you' are
feeling.
What is not a helpful way to get dissociated from a strong
emotion is to tap into an already or potential addicting trance.
This would be something like drinking, taking a drug, gambling,
religion, etc. Of course, any of these ways will kill the pain of
the strong emotion by making you insensate, but they do very
litle to break the trance which is causing the strong emotions.