It is very helpful to begin to see how the unconscious mind categorizes all moments in some version of pleasant, unpleasant or neither pleasant or unpleasant, also called feeling tones. If we are not aware of this process, then the feeling tone can set off a cascade of reactivity.  Learning to catch the feeling tone of any given moment opens the possibility of a choice in how to respond to any feeling tone arising.  This meditation practices with learning to see into the feeling tone of any moment.