His problem is he’s not a fighter, he's given up trying to be an effective President and has never been a true leader. For someone who exudes big dreams and massive policy ideas he doesn’t have the inner-drive to make important things happen in the face of adversity. He got lucky with the ACA due to the composition of Congress but doesn’t have the instincts or motivation to make things happen now.
He could very well be remembered as the weakest President ever unless he gets with the program and starts fighting for what needs to be done – using the Congress as it’s designed to be used - showing engagement instead of aloofness.