[Mr_Bean]

Of course the difficulty in managing two haves of a mind, is that sometimes one overpowers the other. This is more common with the negative emotions and we can become swamped by anger, anxiety and fear. Due to the adrenaline these generate, we can become in a highly unsettled state quickly and feel very out of control. The flood of feeling can seem like it cuts us off not just from our own thinking but the rest of the world. I personally have found this useful, and also to think that if this can happen in the mind, then we can also turn it around in the mind. Physical symptoms like lack of concentration, butterflies and knots in the stomach and exhaustation should all decrease and normalise once the mind is balanced again.

(forgotten source!)