I think my self-confidence has been destroyed by the people around me.
Who do you think has contributed to this the most?
It is my parents who have been destroying me ever since I was a child with what they say to me all the time.
That sounds awful! It was terrible of your parents to make you feel so bad about yourself!  However, you're in control now and you should base your happiness on what you, and not others, think about yourself.
It's good for them to make me feel unattractive and emotionally damaged.
That is wrong for your parents to say those kind of things to you they shouldn't make you feel bad about yourself. Also, to be happy, you shouldn't worry about what other people think. You should only be concerned about how you feel about yourself.