Hello everyone, if possible, I'd like to receive some advice since I'm feeling pretty lost on what to do.
My favourite person experiences mental health crisis' (crisises?) which often lead them to give up on hobbies and spirituality. This leads me to feeling even more on edge than I naturally am, and I constantly check on them (this is also a part of OCD, which runs in my family) and putting their needs before mine. It's especially awkward since my FP is my older sibling and for some weird reason I feel like it's my duty to take care of them, even if my parents already fill that role. 
It's extremely unsettling, but this person is constantly on my mind for some reason. I'm already trying to uplift them; I should acknowledge that I can't do anything more than that but I still feel this way somehow. I wish I could be more balanced in my feelings towards people, this is not the time that I get obsessed with someone to a point of no return.
Thank you for reading and I'm sorry for rambling about something like this.