You say BP2. Which is good as meds can usually control the highs easily. The depression side? Needs serious meds to help. If you go really bad then anti psychotics may help but for now stick with the most common meds.
I'm BP2 and had deep depression a long time before BP popped up.
The depression side has been stabilised by Effexor and the highs easily fixed by lithium and now Seroquel. There are many more and these are called mood stabilisers. Those are the two that worked for me. Haven't needed to try any others. Depression though can take a long while to find the right med. Effexor has been my mainstay as it works on depression, anxiety and paranoia all of which I have.
Meds,of course, don't cure us. They relieve the symptoms which allows us to do talk therapy. Until your depression is lighter CBT will not work, depression overwhelms it. I did two courses and it wouldn't work for me at all so I bad mouthed it everywhere. Then, about two years later I found I was actually doing it. Stunned.
All CBT really is about is teaching us that we actually have control of what we think, and when. That was a revelation to me as, although I did that naturally at work, outside I was run by emotions and negative thoughts.
BP, no cure known but BP2 shoud be easily controlled. You can't put on a front when you slip up to hypomania can you? It's too wonderful a feeling to even think of hiding it. I loved it but developed rapid cycling which was horror so I don't risk it at all these days.
No one can understand and are usually afraid of it and even think it will affect them. So you can't explain it. If someone else says they have it then you know how they feel, they couldn't tell you.
They are doing what all parents do, try to pretend their children are fine else they see it as a reflection of their parenting. They don't get it. I mean, If you broke both legs in an accident they wouldn't deny it would they? It's exactly the same. An illness you didn't ask for or cause. It just happened.
Most of us want to know why me, how, when etc. I found out my answers but not from any doctor. And it drove me mad for decades not knowing. My older brother told me, by accident. He didn't know what his words meant to me but it filled in the gaps and I knew. I was lucky.
Often now I think it's probably best to not pursue the past. Just accept how you are now and work forwards. Therapy will dive into the past and they have to know your history but don't spend time on it. No one has yet solved the BP puzzle. No one. Accept it and get it treated.
What meds are you put on? If you've been going for two years wthout meds all that's happened really is the down side has grown stronger. You can verify that from your own memory.
No one trusts us when they know as they don't understand that it doesn't affect our intellectual ability. When down we can be badly afected so that needs to be lightened by meds so CBT can start being easier to follow and try to make work.
Usually if I tell someone, their eyes glaze over and you can tell they don't believe a word I say. Which is so insulting I usually get very angry at them and tell them so. I won't accept being put down or ignored simply because I have an illness. WOuld they do that to us if we were in a wheelchair? No, they wouldn't, they'd go overboard to help us, right? Inequity and hypocrisy are rife in our world and only we actually KNOW.
The diagnosis is actually good as you know what it is so it can be treated. I'm actually thrilled I felt hypomania. So good, energy galore, great thoughts, worked so much and talked a mile a minute. I still think that's how the human mind should be normally, with a few adjustments.
You see, it taught me the human mind is capable of so much more than the mundane use we make of it most of the time.
I see no reason it would interfere with your plans at all. As long as you get good treatment and stay with it. No self medicating and always discuss with your doc if you feel a need for change. You must have a shrink for BP. Therapists come later, including CBT.
Above all don't make my oft repeated mistake of feeling somewhat better and giving the meds away. OK for a while, then crash. You can test it by going without but have a plan to resume meds asap.
Of course you can teach. You can do anything you want, just get treatment and make sure you get treatment that works. Lithium should remove the highs, easily. Depression? I'd suggest Effexor of course but there are more modern versions of it that I haven't tried. Maybe you could.
There is always hope and having felt depression you can see much more than you did before. Most of it not good but you can see it now whereas others just ignore it and never notice. We can never go back to who we used to be as our knowledge horizon has expanded dramatically.
Good luck and let us know how you are going OK.