Comment by mionhe

The cultures I'm aware of that practice meditation value letting go of the things that keep you attached to physical existence, because they're looking forward to a spiritual existence that value more highly.

For my part, I feel that there's value in critically examining parts of your life and deciding what really matters. If something matters, fight for it. If it turns out something didn't, or it doesn't any more, let it go so you can make room in your life for more important things.