To call oneself to a calling, isn’t that how many folks have found their calling? For to discover one’s calling is to accept one—to choose it.
If a person lets go of, or loses, their raison d’être, that person has chosen to leave a life and associated living, for another—perhaps untold—one. That amounts to a change in living that is also of calling.
A person’s raison d’être, whether inherited or learned, determined or undiscovered, or chosen even, forms a dynamo that propels them in their calling. Whether or not ones quest for their life calling or purpose is driven by religion or faith, it is certain that they’re living their calling now, even before they’ve found that calling to move to. You can change your calling.
For many, their calling has simply been to deal with life as it comes; to make the most of living, per time and per chance. They simply live their calling.
To call oneself is to find one’s calling; for to purpose oneself, is to choose ones call.