bad self-confidence

Please help me.I'm so unconfident with myself.
I think my years of life past such a waste.
I'm 23 but I still shy, have a bad communication with people, new people and even my family
I don't know what's wrong with me but I seem afraid to start conversation
I'm afraid of talking wrongly, like people misunderstand what i said
i want to take a job but I need someone to cheer me ..constantly..i don't even have a good friends, real friends
by my side. I don't know to whom to talk about my life, my ideas, my anything..
minus my family because we really have a live of our own eventhough we are living in the same house
we have bad communication..I don't know where to turn to everytime I want a person by my side
With my quite personality, how can I make new friends, and maintain my relationship...
I'm all alone...
I frequently cry for this problem on my own...
I feel like I want to go somewhere , live with somebody else, that would hear me...but where to...I'm so lost..

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