Why do we have to go through separation anxiety?

When I find myself attach to people it becomes hard for me to let go, and even though I know I have to let go I always go through anxiety attacks. Why is it so hard to just let go? What makes us so attach to others?
Answer:
When it persists into late adolescence/early adulthood, excessive fear of abandonment and/or desperate attempts to avoid it can be symptomatic of Cluster B (i.e., Borderline Personality Disorder) or Cluster C (i.e., Dependent Personality Disorder) types of personality disorders.

---

You're a weak soul. Just let go.

---