It might be interesting to think about what an internal 'objective' might be and what it might mean.
A thought experiment: I remember a meditation that some group prosed that started with a cave and a campfire. Take a torch, light it in the fire, and enter a tunnel at the back of the cave. Make a left turn then a right turn and then you emerge into an opening and you'll see X. I can't remember what X was...maybe your true path or some such. Anyway, what would it mean if everyone that did this had the same exact experience. That would meet the criteria both for objective (replicable by any honest observer) and subjective.
So are there perhaps internal objectives thrown up not by inter-subjectivity precisely but by our shared evolutionary history? This might be the deeper component of Jung's archetypes.