I don't think we have a calling.
I do think it's possible to have a caring.
A calling implies that there's just one thing for you, just one thing you're supposed to do.
What we most need in our lives, though, is something worth doing, worth it because we care.
There are plenty of forces pushing us to not care. Bosses, systems, bureaucracies and the fear of mattering.
None of them are worth sacrificing something as important as caring.