How to get over parents who are not really parents to you?

I am still learning how to accept my biological parents who have not really been supportive parents (ie-guidance for my future, caring for my health, etc.). They mainly care about themselves and their own ideals and what drives them in their lives. How do I let-go of wanting my parents to be parents to me, yet I know I need to move-on. Would like your in-put and advice. Thanks.