Welcome to Psych Central (PC) Quietus. Sorry to hear you are having trouble talking with people and your parents. I think it is a universal thing that children want to hide their precious jewels of who they are from the probing eyes of parents. Maybe parents try to control and the only way to maintain an identity is to just not talk.
Some people at PC will find a therapist will help them sort out the roots of their life.
Many people find compassionate, caring people here at PC. Some people find the forums give them the compassion and empathy they seek.
http://forums.psychcentral.com
There are articles that go into more detail about coping
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