Hi chels93
Welcome to bpdfamily!
BPD is a difficult disorder, but now that you know of it you at least have a possible explanantion for your mother's behavior.
I am sorry that your mother abused you and subjected you to outbursts. That's very difficult for a child to deal with. Many children of BPD parents find themselves struggling in their adult lives. Perhaps it can help you to take a look at the Survivor's Guide for Adults who suffered childhood abuse in the right-hand side margin of this board. This guide takes you from survivor to thriver through 3 major stages: 1. Remembering --> 2. Mourning --> 3. Healing.
You mention struggling with setting boundaries, are there perhaps also other things listed in the Survivor's Guide that you find yourself struggling with?
Setting and enforcing/defending boundaries is very important to protect yourself and preserve your own well-being. To help you with this, I've selected some resources about boundaries:
Setting Boundaries and Setting LimitsBOUNDARIES: Examples of boundariesTake care