Your mind is a room. Notice who you’ve been letting walk through it without knocking.

What you take in shapes what you think about, and most of it arrives with no decision from you at all. Accounts followed out of habit, a person whose comments you keep replaying, whatever the feed hands over at midnight: none of it asked permission and all of it leaves something behind. Attention has a door, and the door stays open by default. The traffic only becomes obvious once you start counting it.

Spend a couple of days noticing whose voice turns up in your head unprompted. Mute or unfollow two of them. Adding something better counts as much as removing something bad.