It seems, in few words, that the key is to delay in some way the moment in which we act in relation to the conflict that caused the emotion so your rational part drives you instead of the emotional part.
I guess the aim is sometimes not only delay the moment but avoid to take any action.

For what I have read in this same thread, I particularly liked a technique which consists on doing something that can provide you the oppossite feeling you are experiencing. That is, a simple example, you are sad so you can listen or watch something funny.
The last time a was in depression, one year ago this time, not so long lol! i was very shocked when my psych, then asking me for doing a list of the things I like to do or enjoy, he put the stress on one I have chosen, comedy. He even gave me as a homework see comedy monologues that I really love.

So, guys, whatever you are living, put some humor in your day. It works.