I have a good dream of becoming a physician or a doctor to help people , but I am pretty old now (35), I can't imagine myself that I have to take an entrance exam to a medical school to be a freshman again. I guess it will probably be in my middle 40s before I can start working as one. My mind is always segmented into different small loves to donate for random fields that come to me. I can't change myself to be involved in a single area. Time won't be able to change me either. Help please.