I'm wondering now if INFJs are as capricious as INTJs now. They can be much worse than P types because once they DECIDE that they're finished or that there's nothing more they can do, they leave and move onto the next project without a thought looking back, while a P would most likely go back to tinker.
And I think now is about time for me to quit. The turn this conversation has taken is making my head spin. Adieu!