I have related my anxiety that I get when separated from my wife(and anxiety in previous intimate relationships) to being separated from my twin in school in a very sudden, cold way when I was too young to understand. Before this separation we had basically spent every waking hour together.

I figure fellow twins or sufferers of anxiety may be able to understand and offer some advice. The problem is that whenever I am left alone, for any length of time I over eat and damage my health from doing so. I could really use some help calming myself. I have actually been to many therapists for other things and made a lot of improvement in my life as a twin who is far away from my other twin, but I still struggle- mainly with eating and finances, impulsivity when I’m left alone. 

It doesn’t feel like traditional anxiety, as it’s not the bone rattling, nervous feeling kind that affects your breathing, heart rate, at this point, probably having lived with it for 32 years, it just feels like my baseline. I know it must be separation anxiety.
Please- anyone- help! Maybe there’s a book or something out there for me/us? 

Thank you.