In my early career, I took it personally whenever someone left the company, especially if I'd hired them. I took any exit to mean the culture was on the brink of failure and it was all my fault.

As I grew up and the org around me grew too, I learned to chill out: to be grateful for the work we did together, to listen critically to their feedback, and to recognize what was and was not in my control. Growth begets change, and exit is healthy. 

Very often I would see them again. Not always as colleagues, but as clients or collaborators of another kind.

I'm eth newbie..just learning
(working on @farcaster)

terminally.online

How you perceive this or that information is only your problem. If some news pisses you off or makes you sad, stop for a second and think about it.: This reaction is just the result of your choice. No wonder two people can perceive the same event in completely different ways. Where one will accept his failure calmly, regarding it as a precious experience, the second will drop everything in upset feelings and give up.