We recoil from the notion that this is it—that this life, with all its flaws and inescapable vulnerabilities, its extreme brevity, and our limited influence over how it unfolds, is the only one we’ll get a shot at. Instead, we mentally fight against the way things are—so that, in the words of the psychotherapist Bruce Tift, “we don’t have to consci

We’ve been led to believe that our lives will always ascend, for example, and are shocked to discover they oscillate instead. Our society tells us we should be basking in progress, but our experience tells us we are beset by slip-ups. Might this gap help explain the anxiety so many of us feel?