“You see this goblet?” asks Achaan Chaa, the Thai meditation master. “For me this glass is already broken. I enjoy it; I drink out of it. It holds my water admirably, sometimes even reflecting the sun in beautiful patterns. If I should tap it, it has a lovely ring to it. But when I put this glass on the shelf and the wind knocks it over or my elbow brushes it off the table and it falls to the ground and shatters, I say, ‘Of course.’ When I understand that the glass is already broken, every moment with it is precious.”

adapted by Mark Epstein (from Thoughts Without a Thinker)

Credit for the excerpt https://www.reddit.com/r/Buddhism/comments/q42omi/the_glass_is_already_broken/

Personal thoughts:

This is similar to a good relationship advice: “your partner is not yours, it’s just your turn” that helps you to not be possessive and allows you to enjoy every moment with them.

I’ve successfully used this philosophy to calm myself regarding various anxieties: getting old, losing job due to poor performance, being likeable, etc. If I really believe this job is already lost (even when it hasn’t) I tend to be more focused on working to solve it instead of sulking.