Attachment has to do with how our relationships are with other humans. Trauma is something bad that happens to us that results in the creation of adverse thoughts and behaviors. Attachment issues and trauma issues do not necessarily go hand in hand. So I don't understand what these therapists are saying either.

In what ways do you want to hurt yourself? Physically or emotionally? What is it you say you are suffering from exactly? If you are happy, why do you want to hurt yourself? Can you ask your therapist for more clarification to help you out?

I'm sorry you are struggling with all of this.