If you really want to read a book, catch up on HTML5, watch a video on Python, or learn to cook, schedule it. You schedule an hour for a meeting at work and you show up, why not schedule an hour in your work day to read. If you boss asks you what you're doing, you're doing technical research on a project. You're sharpening the saw. Schedule time for you rather than trying to find time for yourself within a schedule you've setup to help everyone else. Make time for yourself as well as relationships.
Productivity vs. Guilt and Self-Loathing - Scott Hanselman