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 consciously participate in what it’s like to feel claustrophobic, imprisoned, powerless, and constrained by reality’.