Try watching Dr. Daniel Fox's videos
https://www.youtube.com/user/lcruz71 on bpd he is a world renowned expert on cluster b personality disorders and he makes it sound like less of a death sentence than other sources if you were just diagnosed. Avoid the stigma surrounding BPD because it gets confused with Narcissistic Personality Disorder and if you Google it and read about people talking about their bpd ex's like they are unlovable narcissists most of those people are mentally ill codependents that got out of nasty bpd or npd relationships(I'm one of them but I'm not a demonizer) and you should ignore their spite they are not experts.
Dr. Fox also authored an at home DBT workbook
Amazon product ASIN 1684032733I used to recommend to clients with BPD before my own mental health went to shit. I met a lot of people who suffer with this and there were actually quite a few able to put symptoms of bpd or their bpd itself into total remission with meditation/mindfulness, dialectical based therapy and mentalization based therapy(MBT was designed specifically for bpd and is even more specialized than DBT). It's a lot of hard work but everyone is somewhere different on the bpd spectrum it's like a prism. And everybody is unique in their own individual struggles of it no matter what you read you are not all textbook or typical cases. It's really better that you got this diagnosis rather than having it and not knowing because you can understand better why you feel the way you feel. I hope you find peace.