I have BPD and was diagnosed about 6 years ago. I obviously cant speak to your issued that you deal with.
What is like? Well the best short description "emotional deregulation" and i do have swings. Do I have anger issues? Not really, as I have overcome a great deal of that through DBT. Now a lot of my frustrations are internal conflict within my mind and thoughts. People tell me I am the easiest going, stress free, and happy. IF they only knew!
One trait is seeing things in "black and white" and judging your feeling. Someone (or something) can be bad one day, and good the next. I know work at seeing grey and not judging. Honestly the past year with the division in our country and races, has really made me see everything in a different light.
While I do not care what most people think and somewhat (or days) I am very secure in who I am, then others I think very low of myself when I see my symptoms create problems in my life, esp relationships. Although one good description is the saying "thick skinned" people, while is to be said that people with BPD do not have a lot of that protective layer, and are very sensitive. For me it is abandonment, and or fear of.
I do have issues and conflict with my relationship with Christ. I pray for guidance and direction, and have a tough time feeling and hearing what comes from God, or my own mind telling me what I want to hear. I have made lots of bad decisions (impulsive) decisions in my life.
I do have impulsive decisions, sometimes with spending. I am the type that I fear not living and I spend money on making memories. Traveling and exploring so part of that I love about me. I am not into material things. Basically I go with the flow and do what makes me happy (outlets) and look back and think "man was that dumb". Im a daredevil and a adrenaline junkie.
NOW, onto some responses here that do not fit everyone with DBT. There should be some clarification. There is a wide variety of cases and it differs from person to person. Its a illness. Think of like skin cancer or pancreatic cancer. Some match all the traits, different ones, and some match a few. Matching 5 of them usually warrants a diagnosis. Is there a manipulation component? Yes, but to label that with everyone with BPD is flat out wrong. To say that all of BPD patients are very difficult and hard to treat? Wrong again. Having the awareness and desire is tough. One the desire is there, treatment CAN be easy, although its not a diagnosis that as some say "go away". You can however manage them and to say that you do not "fit" the criteria of 5 that is needed.
I have never been hospitalized and the majority of men I have been in group therapy with havent either. I have never cut either. Keep in mind there are extreme cases, and most of what people read on the internet speak towards that mostly hence the reason for a misunderstanding about the illness.
How I found out? I struggle most of my life with depression and high times where life was super awesome and exciting. It took the lowest I have ever been where suicide was a strong thought. My sister ask that I see a DR to do a full eval. She researched many, and off I went. I thought I was bipolar (2 hypomanic), and when I met him, he did not diagnose me but rather said, I want you to look up BPD and learn about it over the next 30 days and lets talk again. When I looked it up, instead of being worried, so much weight was lifted off my shoulders as I finally found the reason "why" I was the way I was. The awareness alone changed my life because I knew the answer and there was a solution to a better life. I do not even recognize myself when I think about years ago. I never took a anti depressant again, which actually can make the symptoms worse and found a medication (with no side affects) that is awesome.
Lastly when I thought I was bipolar, the DR said no way and described it like this. Bipolar mood swings can be long periods of time while BPD can be rapid. Hour to hour even vs weeks to months. With bipolar when someone is manic and depressed, even winning the lottery wouldnt snap them out of it. With BPD it would be rock bottom to highest of highs in a second ha.
This is something you might want to just consider to explore if you really want an answer. I would reach out to a DBT and a therapist that can recommend a good DR that sees a lot of patients with BPD. The reason I say that, is BPD is hard to diagnosed and is widely missed. Everyone I saw never even brought it up for 18 years. As teenagers and young kids is almost always past off as ADHD, which is part of the reason. Stimulants can make BPD a lot worse.
Well I ended up spilling more that I planned, but I hope this helps