Stress affects people in all different ways – or at least, different people respond to it very differently. For some, it rolls off quickly, and they rebound in a reasonable amount of time. For others, it “sticks” and it takes much longer to recover, if ever. This is because people’s mental “resilience” varies enormously, which itself is based on both genes and environment. For people who aren’t so good at coping with stressors, it may be that they’ve never been particularly good at it—or it could be that they were once good, but the losses and blows of life have worn their resilience away over time. Luckily, it’s possible to build resilience back up.