My cousin came to mind when reading this thread for some reason, and when I read your post, you described her to a T! I think she'd prefer to go back to those days too.
I feel like I go through spells where I want to be girly and spells where I want to just be comfortable and not worry about my clothing and hair and all that stuff. I used to have to have on at least mascara and eye liner to leave the house. Since my eye thing this summer I only wear it if I need to. I just want to be comfortable in my own skin. I think that matters most!