The strongest aspect in your chart is your ascendant conjunct North Node by 1 orb approaching.The ruler of your ascendant and chart ruler is Venus. Venus conjuncts mars and jupiter which all fall in the 3rd house except for jupiter in the 4th but I feel the jupiter makes the stellium stronger.
"The third House is the House of Thought. There is a big emphasis on communication, including language skills and literary work. It can indicate cleverness, meaning dexterous and also cagey and shrewd. It refers to education, particularly school education. It concerns writing, recording and lecturing. "
Also the ruler of your tropic MC is the sun and you have Sun in Sag conjunct Mercury in Sag which is your second strongest aspect along with venus conjunct mars. Your sun/mercury conjunction fall in the second house in your tropic chart but fall in the 9th house in your draco chart which can indicate making a living teaching.
I dont think you should go for psychology, I feel your true calling is education/teaching.
The question is if you should become a professor or teach at primary school, middle school, or high school and what subjects.
You have a strong 9th house and 3rd house influence and your chart ruler venus falling in the 3rd conjuncting mars and jupiter tells me you love learning and communicating to others what you know so yes Teaching can very well be your true calling!