How can I slow the aging process?

I'm 21 years old and haven't really lived my life. I missed a lot of opportunities, so it's really important to me to look as young as I can for as long as I can until I've at least had some experiences with the opposite . Anyway, my mom looks older than she is, and she's in her 50s. Her face is full of wrinkles. She's smoked for most of her life and has a drinking problem, but I still wonder if some of it is hereditary. Anyway, what can I do to stay as young looking as possible? Please give me diet tips, skincare tips, and anything else you can think of. Thanks.