I studied the wrong subject
Im a doctor. I studied medicine because i wanted to be useful and told myself that i would like it. I did sometimes, but not enough. I had a tendency to shy away from big responsibility; adapted myself to taking it anyway. Most of all, i find myself thinking about my true interest: green innovation. Coming up with an idea that will improve everyone's life instead of "helping" one person at a time.
I am 30 and starting a new degree is financially impossible for me. I will have to live out my life knowing i have not stayed true to my core passions and beliefs. Any advice as to how?