Positive Emotion Trumps Negative Emotion

People make such a big deal out of how they feel and when they feel bad they often say and do things that make them feel worse. There's an accompanying belief that there's nothing one can do about it, and standard advice like 'grin and bear it' or 'chin up' are no help (though you get brownie points for being brave). It is far simpler to change from feeling bad to feeling good than most people realise, and a good starting point is doing good.