Yup. Pick the battles that matter to you and that you have a choice of winning. There will always be forces beyond your control that affect your life - be the

Yup. Pick the battles that matter to you and that you have a choice of winning. There will always be forces beyond your control that affect your life - be they natural disasters, other people's decisions (from personal choices like whether to date you and small-scale professional like whether to hire you; to which departments to cut in a major layoff; to enormous political/social upheavals), market forces and scientific breakthroughs that you can't predict, etc. If you don't roll with the punches on those, all you'll accomplish is to make yourself angry all the time. But there are also choices you can make - such as how to spend/invest your money; what jobs to apply to; whether to start a business, and which one; whom to try to date or ask to marry you; where to buy or rent a home, etc. that will have massive, compounding effects on your stress levels and happiness.