<human>: Can you condense the text into three sentences or less?

Just to be clear before anyone jumps to the conclusion, my mother is not a narcissist. She is the exact opposite of a narcissist. She has been a single mom since I was really young and has been completely awesome. She is extremely giving and caring. At points when I was a teen this was a huge annoyance for me but now that I have a little perspective I really appreciate how hard she has worked for her family and how loving her heart is. 

I should mention that she was married young to my brother's father (well half brother but I've never thought of him as anything other than my brother) and my brother was born right around the time she was 18. She has literally never been on her own without having a kid to take care of or living with someone. 

I'm the youngest child out of three of us and am feeling a little guilty about it. I realize this is a stupid way to feel and that I need to be able to create my own adult life separate from her and I definitely have. I live on my own, I support myself entirely with two jobs and go to school full time. 

There hasn't been one incident where she has tried to make me feel guilty but just small moments when we are alone together that she mentions that she feels out of control and unsure of herself. I feel that mostly this is the result of her basing so much of her identity around being a single mom. Like she is having a hard time finding who she is now that she doesn't have us at home to give her purpose to get up in the morning. 

It isn't as though the three of us kids don't see her often. We all get together just about monthly to celebrate something or another and we all live within an hour of each other, I especially see my mom often and try to take her out to lunch etc.. so I don't believe that she is simply feeling lonely. 

Does anyone has experiences with this kind of thing? How do I encourage her to focus on herself for once?
<bot>: my mom is a empty nest-er who has devoted a huge portion of her life to her family. I'm not sure how to help her with this transition.