I'd like to begin by saying that the key thing to remember is that you must only choose a career (a life-long decision) that you really have your heart in. There is nothing wrong with your choice of career, or the one you currently aspire. A few other alternatives you might want to consider, however, could be any field involving some research work or even psychology (ruler of 10th, Ven, in Sco; also Ven is in a trine to Jup in the 8th - natural house of Sco); someting creative and artistic (Ven rules MC and is in the 12th). Jupiter being your Asc ruler and also in an aspect to the ruler of your MC, Ven, might indicate an interest in working either overseas or with foreigners/ foreign languages and cultures, or even with some kind of counselling/teaching work.
You have difficult planets in your 9th (higher education) and 10th (career and public reputation) houses, Saturn (stability, but also one demanding toil and the ability to overcome setbacks) and Pluto (transformation, going through highs and lows, confronting deep-rooted fears, and the want of power or feeling overpowered by others). However, once you have settled down in both these areas, these planets also give you tremendous staying power and the ability to focus. With Saturn in the 9th house of higher education, astrologically speaking, the native might face blockages and hardships in that area of life, and settlement is usually a bit delayed. As already mentioned, Saturn tests one and demands hard work to overcome hardships. The North node in the 9th shows that you need to move 'towards' the 9th-house matters, so, again, the element of 'achievement' after some investment of effort and patience is involved.
Moon (always very important to consider in any area of life) in Aries means that you need independence of thought and action, as well as the feeling of moving forward and achieving your goals in order to feel internally secure and fulfilled. Also, freedom of thinking is shown by Aqua on the cusp of your 3rd (thinking) and Mer (again the mind and communicating) in Sag and angular (very active). On the other hand, though, your Sun in Cap's foremost need is stability and security, often by holding on to the status quo (quite the opposite of Aries). Hence, it will always look for firm grounds to stand on. This Cap quality is further reinforced by Sun's tight trine to Sat. However, your Sun is also in a close conj to Mars (actually Mars is combust here, but in Cap is strong through exaltation), which lends your Sun also a Martian/Arien touch. This makes it a bit simpler for you to balance your basic personaliy and ego (Sun- in Cap) with your emotional security and satisfaction (Moon- in Aries and fired through a trine by a fiery Jup).
One thing might be important to mention here - 2 important transits. You had your Sat return not very long ago, as you yourself made mention of, and this happened in your 9th house (higher education). This led to to three things: firstly, due to the interruption or blockage in your study (due to monetary problems), you saw the reality of the limitations you are encoutering in the face (very Saturn-like). Secondly, this encounter with reality made you look deeper and check on things like - am I really in the right field and doing the right thing? (also very Saturnian). Finally, the first two points made you persevere (a typical Cap/Sat quality) to get back into what you had started, but, at the same time, stay realitsitc and confront the reality that it might not work out, or be the right thing. I can assure you, however, that you are not alone here, but that this is quite typical of a Saturn return. It might happen in different areas for different people though, depending on where Sat is placed and what it rules. The second important transit, which I won't explain much, is of Pluto, which has been going over your Asc now for many years already, making you feel as if, slowly but surely, you find your-self (1st house) undergoing some deep, internal transformation being triggered by different areas of life.
Hope this gives you a better understanding of your chart in general, but also in regard to your vocation and education.