I think I need to deactivate my facebook

I have not always been this insecure but in the last three years I have become overwhelmingly insecure. Facebook I think just makes it even worse because I feel left out when people post they are doing this and that when I didn't get an invite or they doing so well and yada yada. Plus I find myself checking up on ex boyfriends and other things....argh I dunno but then I know I would find myself wondering.......grrrrrrr