The key thing is to force yourself through the work, force the skills to come; that's the hardest phase. - Cal Newport

continuous and harsh feedback he received accelerated the growth of his ability.

in 90 percent of your daily life, the presence of a cell phone either doesn’t matter or makes things only slightly more convenient. They’re useful, but it’s hyperbolic to believe its ubiquitous presence is vital.

The thought process that went into building these applications, Facebook being the first of them, . . . was all about: “How do we consume as much of your time and conscious attention as possible?” And that means that we need to sort of give you a little dopamine hit every once in a while, because someone liked or commented on a photo or a post or whatever.