How do I let go of the vigilance my career demanded?

Mandatory retirement is close, and you're realizing the constant vigilance you've carried for a whole career didn't stay at work, it became who you are. Now you're asked to put it down, and you don't know how. That's not a small thing. You spent decades training your mind never to relax, and a mind doesn't unlearn that overnight just because the badge comes off. Be gentle with yourself here. The alertness that kept planes apart was a gift you gave the world, and it's understandable that it fused into you. You can't flip it off like a switch, and trying to force it will only tighten the grip. What you can do is slowly teach your nervous system that it's finally allowed to stand down, that the sky no longer depends on you watching it. Give the vigilance somewhere gentler to go. Take up something that asks for focus without high stakes, a craft, a garden, a game, a cause. Move your body, since tension lives there too. And be patient, this unwinding takes time, maybe with help from others who've left the tower before you. You're not losing yourself. You're letting a part of you finally rest that has earned it many times over.