What worked for me with Facebook is doing "Facebook Fridays" - as much Facebook as I wanted on Fridays and nothing the rest of the week. It didn't take long to realize I was not missing much.
With other sites like HN, I have short-term success with going cold turkey for a specific time-frame (e.g. a week). I can stick with that, and my use afterward is more moderate but eventually I come back to over-use.
With other sites like HN, I have short-term success with going cold turkey for a specific time-frame (e.g. a week). I can stick with that, and my use afterward is more moderate but eventually I come back to over-use.