I'm thinking about this pretty often lately. What would I do, if I have to change fields and what would I enjoy the most?
I've been studying human interactions and communication for some time and it fascinates me how we use the same techniques and patterns while communicating to each other and how the body is involved in all that. I started to see the little mimics and gestures others make in different scenarios and situations and how people respond to our verbal and non-verbal signals.
That being said, I would probably chase a realization in the Applied Psychology field. I started programming, because I love solving difficult problems and what better case of difficult problems than the human behavioral issues.