Id like to share my experience with a plan that I used when I was going through my separation from my ex wife. I can 100% say this worked and got me over my ex wife - and then subsequently into the clutches of my exBPDGF . But TBF, I didnt realise at the time that I still had issues about relationships in general - and brought them into this last crazy relationship.
Its a few bullet points from a marriage therapist called Michele Weiner-Davis from "divorce busters - how to save your marriage" called "The 180 plan".
This applies to well perhaps not a healthy relationship (as you are on the verge of divorce), but one that isnt with someone with BPD.
But I believe you can apply this logic to a pwBPD.
The outcome is that you either get them back or you move on... .and as you continue following these rules, you start to not mind either way.
It really is a clever set of rules to live by and it alters the way you see things, how you act, how you behave and how you feel about yourself.
enjoy... .and if anyone takes this plan up... .let me know how you go... .

1. Do not pursue, reason, chase, beg, plead or implore.
2. No frequent phone calls.
3. Do not point out good points in marriage.
4. Do not follow him/her around the house.
5. Do not encourage talk about the future.
6. Do not ask for help from family members.
7. Do not ask for reassurances.
8. Do not buy gifts.
9. Do not schedule dates together.
10. Do not spy on spouse.
11. Do not say “I Love You”.
12. Act as if you are moving on with your life.
13. Be cheerful, strong, outgoing and attractive.
14. Don’t sit around waiting on your spouse – get busy, do things, go to church, go out with friends, etc.
15. When home with your spouse, (if you usually start the conversation) be scarce or short on words.
16. If you are in the habit of asking your spouse her whereabouts, ASK NOTHING.
17. You need to make your partner think that you have had an awakening and, as far as you are concerned, you are going to move on with your life, with or without your spouse.
18. Do not be nasty, angry or even cold – just pull back and wait to see if spouse notices and, more important, realize what she will be missing
19. No matter what you are feeling TODAY, only show your spouse happiness and contentment. Show him/her someone he/she would want to be around.
20. All questions about marriage should be put on hold, until your spouse wants to talk about it (which may be a while).
21. Never lose your cool.
22. Don’t be overly enthusiastic.
23. Do not argue about how they feel (it only makes their feelings stronger).
24. Be patient
25. Listen carefully to what your spouse is really saying to you.
26. Learn to back off, shut up and possibly walk away.
27. Take care of yourself (exercise, sleep, laugh & focus on all the other parts of your life that are not in turmoil).
28. Be strong and confident.
29. Know that if you can do 180, your smallest CONSISTENT actions will be noticed much more than any words you can say or write.
30. Do not be openly desperate or needy even when you are hurting more than ever and are desperate and needy.
31. Do not focus on yourself when communicating with your spouse.
32. Do not believe any of what you hear and less than 50% of what you see. Your spouse will speak in absolute negatives because they are hurting and scared.
33. Do not give up no matter how dark it is or how bad you feel.
34. Do not backslide from your hardearned changes.
***
The genius of this plan is that if you follow the rules, you will rebuild your life... . It works!
Best advice... .print them out and stick it on your fridge... .and everytime you're feeling down, just take a read and reassure yourself that things will get better.
I completely forgot about this and will now start to follow it again.
Hope it was useful... !
Cheers