Nothing new to add here but another voice. I was recently diagnosed as bipolar type 2. I have experiences quite similar to what you've described, but I don't know if it's directly related to the bipolarity. When I'm stressed I become more paranoid, including minor hallucinations. On the other hand,
paranoid that I am annoying the crap out of everyone around me, and that I'm not being a good friend to one of my friends that's dealing with a crisis
is always me.
When hypomanic, I have urges to get things done. Sometimes I feel stuck, but usually I recognize that I can do whatever I want to advance myself, regardless of the situational norms. For example, considering that I could skip school to work on coding, even though that's not what I'm supposed to do.
The feeling of being stuck inside myself either comes during or leading to depression. Wanting to do so much but worrying that I won't be able to; that I can't make it.
Basically, because of my low self-confidence, poor experiences, and overall worldview, I see myself as nearly worthless. I can never do what is best, nor can I even do my best. I am thoroughly convinced that no-one actually likes me. I disregard standards while following along my goal of changing the world. I'm sure that I can, but the question is whether I want to or not. When I'm depressed, the answer is "No, why bother?"; when hypomanic, "Yeah, let's do it!"; when middling, "Sure, why not?".
When I get stuck thinking something, I can't stop for the day. This makes it easy to fall into depression and hard to get out of it. It can last for days, even. It just goes away; I stop caring about it for no particular reason. I don't have any control over it. Depending on my mood, various levels of distraction may help while I'm focusing on them, but it always returns.
Like I said, not much to add. I tried to address your statements, but I doubt I helped at all. But you have this, for what you make it worth.