I know that DBT (therapy method) is wonderful for teaching skills to deal with emotional regulation, distress tolerance, & interpersonal relations & it teaches one how to combine the emotional thinking with the logical thinking in the mind to come up with the wise thinking for problem solutions.

It definitely sounds like you have some obcessive compulsive thinking & actions going on in your life. Was there some traumatic thing that happened in your life where you almost lost your parents, or even one of your parents.....like a major accident or did you observe an accident where you thought about what would it be like if it were your parents involved in it (even though they weren't).

If you can chain your thinking back to a point that caused you to start feeling that way.

One of my eskies (Leo) has terrible separation anxiety with me. There was never anything that caused him to have that other than the fact that he has never been away from me since the day he was born. He gets so bad that he will tear my house apart trying to get to me if I leave him alone inside the house even if I'm just outside in the yard. I take him in the care with me everywhere I go & if he gets afraid (like if a storm comes up) he actually jumped out of my truck & ran around the parking lot & was trying to get into the grocery store to find me. I'm sure if he could use a cell phone when left home alone he would be calling every hour also.

Since you have already tried so many T's, I would definitely look for one who specializes in the issues you are dealing with. If you can think back to a trauma that might have happened, then it might be part of PTSD (post traumatic stress disorder) or if there's nothing you can point to, I would look into a T who works with obsessive compulsive disorders.....which can manifest itself into looking like separation anxiety.

there is always an answer....sometimes it takes a lot of searching for that help