[makeitdouble]

> that sustains your livelihood

That is the part that makes it different. "Ikigai" isn't bound to an occupation or work, where "vocation" has to be.

I'm also not sure it needs to have a positive connotation ("brings good to the world"), making people's lives a nightmare can be your reason and pleasure to live. That's of course not the PR piece's point of view, I agree with the other comments on how bad that Venn diagram is at the end.