1. Getting Things Done (GTD) is an action management method to organize tasks and commitments outside of one's mind. It helps deal with stress caused by having too many loose ends and distractions.
2. GTD uses horizontal and vertical organization. Horizontal control maintains coherence across activities, while vertical control manages individual projects and topics.
3. The key is to get everything out of the head and into a trusted system. This reduces stress from constant unfinished thoughts and allows one to focus on taking meaningful actions.