Sometimes it doesn’t take much. A photo of someone traveling. A post about retirement. A woman who looks settled and unburdened. And there it is. That could have been me. The next thought follows quickly: I should have known. And before I realize it, I’m replaying it again. Looking for the exact moment. The fork in the road. The sentence I missed. The red flag I should have caught. The decision that would have gotten me out sooner. As if somewhere in the footage there is a clean exit sign I...