I have a lot of ENFJ/ENFP experience. Both can go balls to the wall and push themselves beyond exhaustion. Both type have goals and dreams. One key is what drives them. Fe or Ne. Overstimulation is Ne and is driven by what they see. Fe is driven by helping people. My ENFJ wife will push herself all out focusing on anyone and everyone that needs help. ENFPs are more driven by Ne and trying things out. Both like to organize people, but ENFP will organize similiar people which is Ne, ENFJ likes to organize people to get a task done to support Fe.