David Allen is considered the leading authority in the fields of organizational and personal productivity, and the founder of the Getting Things Done method. The premise is simple enough - that a person needs to move tasks out of the mind by recording them externally. That way, the mind is freed from the job of remembering everything that needs to be done and can concentrate on actually performing those tasks.
His book of the same name has sold 2 million copies all over the world. Published in over 28 languages, TIME magazine heralded it as “the defining self-help business book of its time.”