What skincare routine advice would you give your 30 year old self? Or what did you do for your skin and now you thank yourself for doing it?

Asking as a 30 year old woman, it’s so easy to get overwhelmed with all these skin care products and not knowing which one to choose. So just wanted to ask from you ladies if there is anything you wish you had done for your skin? And if you are satisfied with your skin, what’s your secret?