According to Paul Graham, procrastination practiced thoughtfully, is productive:

There are three variants of procrastination, depending on what you do instead of working on something: you could work on (a) nothing, (b) something less important, or (c) something more important. That last type, I’d argue, is good procrastination

Graham urges us to become “type C procrastinators”–to put off time wasters such as errands and busywork to focus on the projects that will be mentioned in our obituary–our life’s greatest work:

People who fail to write novels don’t do it by sitting in front of a blank page for days without writing anything. They do it by feeding the cat, going out to buy something they need for their apartment, meeting a friend for coffee, checking email. “I don’t have time to work,” they say. And they don’t; they’ve made sure of that.