Same here. The trick is to unfollow people who start posting things you don't want to see in your feed any more. It sounds so simple, but many people treat their following list as an append-only log.

I've followed accounts for hobbies that later spiral off into the deep end of Twitter's topics of the day, which is always my sign to unfollow them.

Some people cannot resist clicking on things that make them angry, though. These websites continue serving up more of what you click on.