Ex-friends social media

How do I stop lurking on my ex-friends social media? I hate myself for always wanting to see what they are up to. I have been doing it for the last decade or so and really hate it. I don’t even follow some of them and their accounts are private. But I still check everyday to see if its public. It has become a deeply ingrained habit. In addition, I don’t even think they think of me as much as I think of them. What should I do? Deleting social media is not a choice as I use it often and love using it.