I recently started replaying Final Fantasy VIII and it's temporarily taken over my life, which has had an unexpected effect. In order to continue satisfying my Beeminder goals, I've been forced to use my non-FF8 time more efficiently: I spend less of it mindlessly browsing the internet than usual because mindlessly browsing the internet is neither playing FF8 nor satisfying my Beeminder goals. I get about the same amount of work done each day now as usual.

This really drove home to me the distinction between fully committing to having fun vs. the vague goofing off exemplified by mindless internet browsing.