I'm looking for a term that describes a curator's (eg: an artist's) intense focus, enthusiasm and dedication to a single or, or multiple projects (to which they're the only contributor), especially against overwhelming odds or criticism.
"raison d'être" seems like the closest fit, even if it is conveniently borrowed from French! The only concern I have about this is 1) It's French - hehe 2) more importantly, could someone have multiple raison d'être's (!), for example, would it fit in these 1st person and 3rd person contexts?
While I work on multiple projects, to me, A, B & C have been my raison d'être.
To Bob, his raison d'être is to his projects - A, B & C
"A labour of love" is close, but I was hoping something that is a little more intense than love, and maybe a term that is a little more succinct :)
"Magnum Opus" seems to describe projects that once completed, are recognized at that curator's ultimate work. This doesn't quite fit, as I'm looking to describe the project from the curator's perspective - who might even end up hating that project. I would also like to refer to multiple projects.
"Masterpiece" seems to be used in a similar way, especially after the project is completed, but doesn't fit for the same reason as "magnum opus".
Is there a better term?