David Allen is a considered by many to be the king of productivity, best known as the creator of the time management method "Getting Things Done” GTD. David has spent over three decades researching, teaching and coaching, and is widely recognised as one of the world's leading authorities on how we can get things doneand achieve our dreams.. His GTD program has received huge praise and is in widespread use across the globe. He has been named one of the top global executive coaches by Forbes.