Quitting is a poor idea. Maybe the work is something you love or maybe you are simply using it to occupy your time and create an excuse to avoid the anxiety of social situations. Either way the key is going to be moderation.

My previous roommates in college found it odd that I would spend Monday through Friday alone in my room working or reading, yet on the weekends come out an be completely extroverted. They were almost offended that I didn't want to sit around and watch tv with them during the week. That is somewhat of a sidetrack, but this balancing method allowed my to keep somewhat of an equilibrium with my life.

Take the approach starting tomorrow the same way you would if you were learning a new programming language. It would be insanity and a complete suicide mission to dive into the properties of compilers without even understanding the basic "hello world". You need to take smalls steps and develop your social skills in the same way you would your programming ones.

And by the way, normalcy is overrated.