Life together by 30

Im 26, a nurse, but have a low stress job and only working part time bc im in grad school (three more weeks left). I get paid crumbs for an RN, and I just feel so lost. I already see wrinkles on my face. im so sad and depressed, feels like I barely lived, I have so much unhealed sadness and I just feel like I should have my life together now. im starting to feel super old and feel like I always dreamed of having my life together. I thought it’ll be my turn one day but feels like i’ll never get there. i thought id be an adult by now. I still dress and act like a little girl sometimes. it’s just weird. idk what’s wrong with me. I look in the mirror and hate what I see.