I don’t really hear about ‘god’s plan’ outside of the context of failure or loss, in which is it invoked in a consolatory and comforting manner. I think it has to do with the notion of discerning your vocation without forcing yourself into a role not suited for you, so it’s concerned with the use of an individual’s specific talents or ‘gifts’ to help the world, but not necessarily a ridged predestined plan. I’m sure more Calvinist communities might use it more in the predestination manner though..