Do you want to switch? But seriously, I know people want to be more social. You want to roll back to shyness. Interesting! I'm not sure if you can find books on how to be shy, as shyness is something not desirable, in general. Some people call it a disease, like Jim Rohn. But I understand the part of over sharing. When I talk, I do that. May be it has something to do with ADHD or Bipolar. Cannot you just be present without being involved? I think this way you won't be alone, and at the same time won't share too much.