Hi, welcome to PC!

I agree with Innerzone that it just depends on your cycle where you're at with coping. Sometimes it's better, sometimes it's worse. It's important to use coping skills all the time, but that's often easier said than done. You already know a lot of these skills from your work with BPD.

You say you've been on meds before. Are you currently seeing a pdoc? If you're not interested in meds maybe a therapist will help. Talk therapy can be very helpful, I find. Someone who knows about the combination of BP and BPD would probably be good.

Also maybe track your moods? Sometimes that can be helpful, to learn your own personal patterns.