Hi, Cat. I think you're at the absolute right place to talk about things; here at PC, people are very supportive and understanding.
And I wanted to say, about what you quoted: Maybe others see us as chaotic, I suppose they might. Borderlines do have that "incredible sensitivity", but that can translate into a lot of really positive qualities as well. I think it probably just takes time and work (I'm trying to get there myself).
Being willing to face it head on and do something about it is a good thing, even if it seems scary. I wish you the best, and I hope you find the support that you're looking for here!