I meant to answer to you since you first posted but I thought someone more experienced than me will answer. So you should know I'm just learning astrology.
I find your question interesting because I also have second thoughts about studying psychology. I have a Moon in the 12th in an intercepted sign, the ruler of the MC in the 6th (I work in the medical field).
Since the ruler of your chart is Mercury, it would be good to choose something that involves thinking, analysing. I think you have some challenging aspects in your chart that could give you some hard times regardless of what you choose to do.
I would analyse that stressed Saturn in the 2nd that could give you some money troubles (but also being the apex of a t-square it could provide you the energy -the "stress"- to work with it and acquire some stable values/valuable things). I don't know which ruler of the 2nd to use but it could be the Moon in the 12th who could indicate working with people in suffering or Mercury - again, analysing.
You have two yods that require attention.A lot of illusions, idealising about finding a partner or about the business partners?
I think you should read about your NN to help you go in the direction you're supposed to. In Sag in the 7th - it could be working with people on a "one-on-one" basis, like in therapy or about business, politics, maybe in a foreign country. (Business with foreign people?). And Sag - about teaching them something.
I think that one of the most interesting things in this chart is Sun conjunct Chiron and in this house system they are also very close to the 12th.
You might have some deep wound connected to your ego. Chiron has some similarities with the Sag (the centaur) so if you ever succeed in healing yourself (or even if you don't but you've learned some valuable lessons) you should definitely pass on that knowledge and that healing.
But that is "when". I read somewhere that the "green" aspects in the chart are learning aspects - in this case the quincunxes. You might have learned a lot - and you have the opportunity to learn some more.
As a conclusion, astrologically, I am not sure what could be your "profession". You could definitely be a great psychologist someday provided you understand your aspects - Chiron conjunct Sun (also conjunct Mercury-a teacher, motivational speaker), Moon in the 12th in exaltation and Venus there too, in an intercepted sign -it could take a while to use it properly but you could be very interested in matters of Taurus/Scorpio (that includes psychology), 6th/12th, in aspect with Pluto and Neptune.
But since you have Taurus/Scorpio intercepted and that Saturn in the 2nd in detriment with those squares, whatever you do I would advise you to try to be financially stable and then study what you want. Your Mars is in the 10th and in Pisces making a nice aspect with the ruler of the MC in the 6th, I suppose that could also mean helping others. Good luck!