I have bad days. Sometimes I have a lot of bad days. By and large, I think most people fall into a bad mood because they're able to ruminate on whatever the problem at hand is, and that makes it worse. But when you intercept the rumination process with something that requires your full attention - that's stimulating and absorbing, that places a demand on your intellectual focus - you don't get to ruminate. In a way, it's a mental health aid to be able to do that so much. My routine, what I do, it just feels like home. It's my comfort food.

So depending on the day, my schedule is different. But, generally speaking, I get up in the morning, I do a 30 to 45 minute prescheduling of tweets and just seeing if there's anything urgent - do-or-die emails or server outages, stuff like that. Then after that I go to the gym, where I do all my long-form reading - so Instapaper, and all the Kindle books. I go through an embarrassing amount of books per week.

One of my jobs was at a start-up ad agency. They were trying to do things differently, work with socially conscious clients, and to really be a more creative take on advertising than the industry itself. But I noticed that what the guys at the office were circulating for inspiration still came from within the ad industry. I thought that was really counterintuitive - to only borrow inspiration from within your own industry.

Artist Allen Crawford brings Whitman's undying text to new life in gorgeous hand-lettering and illustrations, transforming the 60-page poem originally published in 1855 as the centerpiece of Leaves of Grass into a breathtaking 256-page piece of art.

What I pick for my blog and what I pick for Twitter are different things. One thing that is true for both, by and large, is that it has to feel like something that leaves you with more than just a moment of gawking.

Presence is far more intricate and rewarding an art than productivity.

Because it is possible to create - creating one's self, willing to be one's self - one has anxiety. One would have no anxiety if there were no possibility whatever.