Physically, I don't worry. I'm 200 lbs with little fat, an obligate exerciser, and have engaged in various martial arts for the past forty years. In sports, particularly skiing, I take calculated risks, stop when I'm tired and don't quite ski as crazily as I did when in my 20's and 30's. Emotionally and psychologically, I stay away from dangerous people. When I was young I wasn't good at identifying noxious, poisonous people but, after a few bad experiences, I became more astute. I protect myself emotionally by limiting my exposure to movies and news that I know will upset me, like those with gratuitous violence and cruelty. I do find that reading about bad things is easier than seeing and hearing them, so it is possible to stay informed without risking too much upset. There's no sense in wallowing in the world's evil. In business, I've been in a number of lawsuits and have become something of an expert in protecting myself against future litigation. I keep meticulous records of everything. I am also good at being deposed. Indeed, I am a nightmare to opposing counsel. I protect myself financially by investing carefully and consistently, limiting risk, and living way below my means. To me, having wealth in the form of investments and liquidity is better than having a lot of things. It just feels good.