I think a therapist would be very cautious about saying anything that could influence a person's decision about a career. My T doesn't give advice so I'd say an opinion like what you'd like probably would seem like advice.

She was very wise not to say too much one way or the other. You will have plenty of time to decide for yourself if this career choice is right for you. Your professors will be giving you the most helpful feedback. I don't think it's necessarily appropriate for our T's to be doing that.

Try to relax. Focus on your therapy. Focus on your studies. You'll see clearly soon enough. And, also, I'd say anyone in their right mind should have self-doubts. That is honesty and honesty is refreshing.

Sometimes too much self-confidence could be translated into a bit of arrogance and I sure would never want to work with a therapist who had never doubted themselves.

Good luck.