one of the coping skills i learned was journaling. i could express my emotions on paper. especially when i was upset. this helps relieve my strong feelings/emotions. sometimes i cry as i'm journaling. it has really helped me.
another thing i'm still perfecting is meditation. i believe part of the suggestions-this being one-is quite useful.
lfmn, in therapy you can discuss about your good friend. your T may offer suggestions of how to not wear too much on your sleeve. i don't do this well all the time either.
some of the gushing i think comes from questioning our own worthiness. we worry, worry and then just have to spew it out or explode. we are seeking validation of self from outside of ourselves. so reminding ourselves of the our positive qualities helps too.
friends can be a great sounding board. often their suggestions about how i'm feeling puts it better perspective for me.
if i'm all tangled up i try to be quiet at home. not always a good solution but eventually i can do something physical that takes my mind off my emotions if just for a while. gives my mind a rest.