A FEELING lasts about 45 seconds and is then released. An EMOTION, on the other hand, is a feeling with a story attached to it, and boy... that emotion can last for as long as you keep feeding that story without letting go (that's how people stay angry at someone or something for 20, 30, sometimes 40 years.. oy!).
Raise your awareness to the difference between a feeling and an emotion the moment it occurs, and let go of the story and emotional drama before it grabs a hold of you.