These feelings you have are valid - do not let anyone tell you otherwise. 

You are not responsible for everything that goes wrong in your relationships.

You are not responsible for everything that goes wrong in your family.

You are so much more to people than just a pretty face, do not let people treat you that way.

You are not a burden to your friends or family.

Everyone deserves trust - try not to not distrust people based on a past traumatic experience.

You are not alone, other people have the same feelings you do.

You will be okay!