So many people I meet are wearing themselves out trying to feel a certain way about a certain situation.  I'm not sure that is very useful.  I think emotions are supposed to be a measurement of the situation which guide our action. For example, if you feel cold you could start jogging, turn up the thermostat or put on a sweater. I'm not sure how much utility there is in trying to stop feeling cold.

I think that Jesus suggests a revolutionary psychological approach to the battle to feel a certain way.  This has become my approach specifically to those I dislike (my enemies so to speak) as well as my approach to emotions in general.