The best we can do is be thankful we're still alive and functioning, get a flu shot as well as COVID boosters, wear a helmet for dangerous sports, don't binge drink, and don't waste too much mental energy agonizing about the past.
People who died of severe COVID-19 had brain tissue similar to that of people who were at least 71 years old, prompting Harvard Medical School researchers to recommend that recovered COVID-19 patients seek neurological follow-up care.