"my family feels like they can tell me what to do"
Ahhh, now I see ... you CAN make it on your own but you continue to play a role in this play that allows them to enable you. Sorry. I tend to get blunt at a certain point when I start hearing too many reasons why a dysfunctional system remains in place. Yes, it is a dynamic and you are fueling that very dynamic. Has the idea of saying "no thank you" been something you have considered? You can find someone else other than your father to be your financial advisor. Hire another accountant. I believe you mentioned in your initial post here that you have always been your dad's little princess.
Sorry, princess, it is time to abdicate the throne ...