Having it all can mean lots of things. It depends on you: what you are like as a person, your unique talents, skills and knowledge, as well as what brings you joy. Ultimately, to create a life that is in alignment with your needs, you need to know yourself. Balance, happiness and fulfilment require radical self-honesty:
What do you want your legacy to be? How important is your career to your sense of self (does it define you or is it just something you do to pay the bills)? What do you consider the most valuable things in life? What does success look like to you? What kind of parent do you want to be? What are your life goals? And what is worth sacrificing in order to achieve these?