Forgot yahoo, facebook etc passwords

Hello,
I Need Help! I have had my iPhone using all of my mail + facebook and it all of the sudden closed & I have No Idea what any of my passwords are. I no longer have any of the needed information, Its been 8-yrs since I had to know it. Ive moved, gotten married and don't know how to reach anyone! Is there another way to recover your Yahoo account? Its also my recorvery account on all other mail, facebook, ect... IM LOST!