How do I support my mother while focusing on my own life?

I find it challenging to think about my mother’s recent struggles. She is touching sixties and has started showing signs of feeling lost. Although I try for her stay active, I can see that she is having a hard time.

It's tough to focus on my work life and goals when I constantly think about her. I am closer to an important milestone in my relationship and I yet to figure out completely on how to take care of her.

I often wonder how other single daughters are manage similar situations. It’s a difficult balance to navigate.