The most valuable thing you have is your attention

I can't be alone in having more time in the day than I have brainpower to do things. Even as productive as I am, there are vast swathes of time (like the last two hours!) when I could have been reading or writing or blogging or, I don't know, pursuing the hobby that I don't have. But I don't. And that's okay, because I don't think it's possible to use e…