A really good article.

Procrastination is an impulse; it’s buying candy at the checkout. Procrastination is also hyperbolic discounting, taking the sure thing in the present over the caliginous prospect some day far away.

Also from the article:

You must be adept at thinking about thinking to defeat yourself at procrastination. You must realize there is the you who sits there now reading this, and there is a you sometime in the future who will be influenced by a different set of ideas and desires, a you in a different setting where an alternate palette of brain functions will be available for painting reality.