After the indulgences of the holidays, in January we repent. We pledge to exercise more, eat less, save money, work harder. Sometimes we even extend these noble pledges to our spouses, sweethearts and kids.No wonder a third of New Year's resolutions fizzle before February hits. They are vague. And, worthy goals as they may be, they are bummers.But self-improvement needn't be a sad homework assignment demanding prudence and sacrifice. Perhaps we'd be more inclined to follow through if we resolved to be kinder to ourselves, to make our lives easier, to lighten our load.