Well, if You insist, then good luck with Your exam (not that You really need it, cause You know all that stuff already. Maybe just a bit of lucky to get easier questions, lol?)
As far as Your main issue, I kinda feel for You - it just happens because You changed Your social life preferences and thus Your friends and acquaintances drifted away with them. How about finding a new hobby or interest? Hitting gym/getting a dog/taking photography courses or something like that? Work-home-work can become very much a routine from which it is quite hard to get out. I have the same problem - on most days apart of colleagues at work and calling my mom, I dont have any other non-online people to talk to, and sometimes it sucks - my method is finally starting to work, albeit kinda slowly. But with regard to friends and acquaintances it is quality not quantity which matters.