Mindfulness, CBT with elements of DBT incorporated into it. We do things like BlueInanna talked about, plus whenever I negative self-talk she gives me different things to say and different ways to look at things. We go through coping techniques for difficult times, teaches me healthier self-soothing techniques and validates my emotions. She is doing what she described as "finding the center in me" which I'd say she's doing a good job at. BPD can go into remission, my recommendation is to do maintenance therapy even after you feel better. Otherwise the stress tends to pile up on you and it comes back. That was my biggest mistake historically, I'd be in therapy for a year or three then start feeling better, I'd tell myself "there is no point anymore I feel normal" and quit going. Only to have my problems resurface a year or two down the road. Or I would get into arguments with the therapists and tell myself they are not worth going to anymore (devaluation). This was especially true of the T who originally suggested BPD.