As a woman, is it hard to have a successful career and a family?

Many women in my family have developed a disorder in their mid 20's which has caused them to become infertile. It is hereditary and is likely that I will develop it. Because of this, I want to have children in my early 20's, however I also want to become a clinical psychologist and would like to eventually like to open my own clinic. I am worried that I will not be able to do both of these things successfully. Is it possible? Any advice would be brilliant