Thank you everyone for your responses. As I said, I am just realizing or maybe better...am admitting I have a REAL and SERIOUS problem (even if no one outside my home knows the full extent) and that I cannot control (without help) and will not just go away...and is, oh yeah ruining my life and my families lives

I have been a selfish coward and blaming others.....
After some recent events, that have unfortunately brought out my worst personality traits (and even some I didn't think I was capable of) did I realize something was really wrong. I started reading and researching and thought I was bipolar, but I cycle VERY frequently, so I began to believe that wasn't quite it, so I found a link to BPD and did some reading and I found my self saying, yup do that, yup feel that way and so on. I am apparently what is termed a "high functioning BPD" because, no one outside my home knows (though I suspect a few are catching on that things aren't quite right with me).
Also I hold a good job and am pretty high functioning and I am the source of income for my family (since my husband is out of work and having many problems himself).Things are very competitive and stressful in todays work world, so the stress from all that is what I believe has brought out..the worst in me of late (although I have had many of the traits of BPD since I was a kid, just didn't know it or did my parents).
So how do I get help without bringing things crashing down around me? I sense things will get worse before they get better and to be honest, some days I am barely hanging on by my fingernails as it is.....
I guess I need to find a good caring compassionate, but qualified and STRONG psychologist first? Someone i can talk to.
Do I tell them what I think I have or let them figure it out? Will they refer me to a psychiatrist? Will I lose my job and family?
Will there be a nightmare of drug side effects, trying to figure out what works?
I know I have to do something, have to be brave finally and not pretend it will go away. So I would appreciate any insights. I need a plan to get started cause have no real friends or support. Have either pushed them away or don't have the energy to invest in them or don't want them to get close enough to see my disfunctional life.
Thanks.