Here's a lil stressful method to wean yourself off Facebook. It's what I did.

Use the settings / notification tab to disable certain notification type. E.g.:

* Some one tagged you

* comments on a discussion you liked, commented...

* who viewed your page

* who shared a link....

Eventually, Facebook ignores some of these settings in a desperate attempt to bring you back.

So create email filters to delete Facebook notifications based on certain keywords.

Also use an extension to block those fun / addicting autoplaying videos.