Not terribly strict about it, but I ensure I am getting other "must-do" items accomplished, and making my goals in other projects' progress, and then the online only gets to occupy what's left-over.

I'm fairly bad at that, as you can probably glean from how often I post during the workweek.

There are browser extensions that you can use to limit your time on a certain set of sites.

Having abnormally high standards.

Problems with social media addiction must be a "people with friends" thing. Pff, silly mortals and their "friends".