When life has you feeling down on yourself -- whether it's because you're stressed at work or beset by problems in your marriage -- letting go is usually the first step toward getting things back on track. Here are some ways you can let go and infuse your life with positivity: Let go of what you thought should happen and live in what's happening. Let go of your grudges, for they will only cause the resentment and bitterness in you to fester. Let go of your notions of how people should think or behave in a given situation, for the higher you set your expectations of others, the more likely it is they'll fail to meet them. Let go of feelings of envy or jealousy you may feel toward those whom you perceive as more accomplished. Rather than compare yourself to others, compare yourself to the person you were six months ago or a year ago -- for that is a far better benchmark for measuring progress. Let go of the past. It's behind you now. All you can do is ta...