Reply To: Deep-seated fear of abandonment
Bear in mind that the “fear of abandonment” was and is a FEAR first, you have given it a name and with multiple uses it has become a belief or habit/pattern of thought.
So CT with the future scenario in your mind/imagination/internal youtube of you finding another “true love” and yourself ruining it, pushing them away, and leaving you alone again.
(You probably won't have to try hard to feel bad in that scene.)
Then go forward with Negative or Positive or both in that order.