The past few weeks my mood stability has been on the vulnerable side, and I've found that more often than not social media (and especially Twitter, as it's far and away the most active form of social media) have ranged from wearying to infuriating. So I've been going through and targeting posters who, even if I agree with them, add stress, and quietly unfollowing them.
This is a tricky thing to do when I'm emotionally wobbly... the temptation is to go all Oprah on it. "You get an unfollow, and YOU get an unfollow-- EVERYBODY GETS AN UNFOLLOW!" But that's neither healthy nor productive in the long run, it's just the tendency-towards-implosion that emotional wonkiness creates.
But trimming the social media tree is a good thing every once in a while. There are enough stressors I can't control, there's no reason to hold onto the ones that I can control.