"Your head's for having ideas, not for holding them." — David AllenDavid Allen (@gtdguy) is one of the world's most influential thinkers on productivity, and his 35 years of experience as a management consultant and executive coach have earned him the titles of "personal productivity guru" by Fast Company, one of America's top five executive coaches by Forbes, and among The American Management Association's top 10 business leaders.David's bestselling book, the groundbreaking Getting Things Done: The Art of Stress-Free Productivity, has been published in thirty languages, and the "GTD" methodology it describes has become a global phenomenon, being taught by training companies in 60 countries. David, his company, and his partners are dedicated to teaching people how to stay relaxed and productive in our fast-paced world.This podcast is brought to you by 99designs, the global creative platform that makes it easy for designers and clients to work together to create designs they love. Its creative process has become the go-to solution for businesses, agencies, and individuals, and I have used it for years to help with display advertising and illustrations and to rapid prototype the cover for The Tao of Seneca. Whether your business needs a logo, website design, business card, or anything you can imagine, check out 99designs.You can work with multiple designers at once to get a bunch of different ideas, or hire the perfect designer for your project based based on their style and industry specialization. It's simple to review concepts and leave feedback so you'll end up with a design that you're happy with. Go to 99designs.com/tim and get $20 off plus a $99 upgrade.This episode is also brought to you by FreshBooks. I've been talking about FreshBooks — an all-in-one invoicing + payments + accounting solution — for years now. Many entrepreneurs, as well as the contractors and freelancers that I work with, use it all the time.FreshBooks makes it super easy to track things like expenses, project time, and client info, and then merge it all into great-looking invoices. FreshBooks can save users up to 200 hours a year on accounting and bookkeeping tasks. Right now FreshBooks is offering my listeners a free 30-day trial, and no credit card is required. Go to FreshBooks.com/tim and enter "Tim Ferriss" in the "How did you hear about us?" section!***If you enjoy the podcast, would you please consider leaving a short review on Apple Podcasts/iTunes? It takes less than 60 seconds, and it really makes a difference in helping to convince hard-to-get guests. I also love reading the reviews!For show notes and past guests, please visit tim.blog/podcast.Sign up for Tim’s email newsletter (“5-Bullet Friday”) at tim.blog/friday.For transcripts of episodes, go to tim.blog/transcripts.Discover Tim’s books: tim.blog/books.Follow Tim: Twitter: twitter.com/tferriss Instagram: instagram.com/timferrissFacebook: facebook.com/timferriss YouTube: youtube.com/timferriss