Troubled

Oh dear...
Your each and every post clearly say that you are in a difficult situation. That's why many of us suggested you to seek professional help.
Besides, you should let the professional counselor decide what therapy is best for you. Don't jump to conclusion that they don't see your problem.
No one is telling you that you are overreacting. You are being honest about what you feel.
What you feel is highly influenced about your thought process. I say, you are being negative here.
And being negative may be a result of how your mind adjusted with whatever the past trauma.
You have a history of being neglected and rejected, so it is obvious that your mind is hurt.
Now that, you are dwelling in that, and unable to balance your life style.
It is a sense of feeling useless. Perhaps, low self esteem, feeling low... you name it.
But you shouldn't battle this on your own. You should seek professional help to come out of it.

Perhaps the people in your past were mean/bad or whatever.
But that experience should not stop you from interacting with new people in your life.
You should not continue to feel isolated, and neglected wherever you go to.
Nothing should stop you from moving from your past, and to find like minded people as friends/relatives/peers or whatever in your present life.

If you continue to feel everyone around you are bad, and everyone around you are neglecting you... then perhaps the problems lies with you.
I mean, the problem lies with the way you relate with the people. Better you check this with a counselor and see.

 

No...you should seek counselling because they should understand what you are thinking .

Either ways writing about it is also helpful.
You need not take others opinion to heart.
Just think of it as unburdening and venting.

 

You can rewire your brain. Keep a target of making small conversations with every single person you meet.

The targets are:
1. Make eye contact with 5 new people everyday.
2. Notice the color of their eye and some characteristics of the eye.
3. Ask them about how their day is going. Your goal is to continuously talk to them for at-least 5 mins.

Keep talking and getting to know every single person you meet till it becomes a daily habit.

Another technique is to imagine a favorite character that you admire. It could be a movie character or from a book or in real life. Imagine you are that person and get into character. If they were in your place how would they act? And then act that way. Slowly you will get their personality and your life would change. After a while you will be shocked at how much you changed from your old self.