Normally, as a negative mood arises, it catches hold and infects the whole mind – we become that mood – with its characteristic form. This is the big weakness of the undeveloped mind – it makes how I feel into who I am. There’s a grasp, a contraction, and we get pushed into the story, get mesmerized by it and rehash it time and time again.
Ajahn Sucitto, Kamma and the End of Kamma
Mindfulbalance 
The next step is that we begin to act from that perspective. Therefore when we discover that we have “become” that mood, then our primary task is to escape from it before we do any damage, using whatever strategies and tactics work for us.