Firm, consistent and practical Boundaries are important. But people with BPD traits (pwBPD) resist boundaries. So what to do? Learn the perspective that boundaries are
yours, what you do
in response when the other goes off track.
Boundaries - as well as many other questions and topics - are discussed on our
Tools & Skills Workshops board. It is well worth the time and effort to browse our various boards, it is one of the drop-down options on the green menu bar.
My exceedingly simplistic example of better boundaries is, "If you do or don't do ___ then in response I will or won't do ___." For example, many here face a partner or ex who often starts ranting and raging. When that happens, it may be appropriate to exit (with the kids of course) and take them elsewhere for some activity until the other has calmed down.