After graduate school, Allen began using heroin and was briefly institutionalized.[4] He is an ordained minister with the Movement of Spiritual Inner Awareness.[5][6] He claims to have had 35 professions before age 35.[7] He began applying his perspective on productivity with businesses in the 1980s when he began consulting at Lockheed's human resources department.[8]
Publications and habitat
Allen has written three books: Getting Things Done: The Art of Stress-Free Productivity,[9] which describes his productivity program; Ready for Anything: 52 Productivity Principles for Work and Life,[10] a collection of newsletter articles he has written; Making It All Work: Winning at the Game of Work and Business of Life, a follow-up to his first book. In 2015, he also wrote a new updated version of Getting Things Done: the Art of Stress-Free Productivity.[citation needed]
In 2024 David Allen has co-authored Team: Getting Things Done with Others on how to work effectively in groups using GTD Principles.[11]
Allen, David (2015). Getting Things Done: The Art of Stress-Free Productivity (revised ed.). New York: Penguin Books. ISBN978-0-14-312656-0.[citation needed]