Yes 100% right. Undiagnosed mental illness definitely runs on my dads side of the family but they like to be in denial. Alcoholism also runs on my dads side of the family. Also i have a second cousin who is in a mental hospital with severe schizophrenia which was triggered due to a traumatic head injury. Also on my mothers side of the family they have issues too especially with anxiety and moods. My dads side of the family has a very intense religious history too. Just thought i'd add that in case it means anything.
Alcoholism and religiosity can both be indicated by Jupiter. Jupiter square your nodes, and your Moon, ties that into your journey, too. Another detail of what's afflicting you and your family. The Capricorn placement of Jupiter suggests people who are religious in an especially heavy handed way, or a kind of compulsive, joyless addictive behavior.
Back to the nodes themselves, as I said above, the south node is where you're coming from, and it can indicate very deeply held beliefs. Your belief that you should be achieving something reflects your south node very well.
Society tells us we should achieve, achieve, achieve, and shames people who don't. If you haven't been able to finish school or hold down a job, that's the extreme end of lack of achievement. Of course you feel it. But I think you may be feeling it more keenly than most, because your south node placement suggests a deep rooted expectation to achieve.
Saturn is the achievement planet. Saturn is all about self discipline and drive. Aries is a go-getter sign, very driven in its own way. And Saturn is your most elevated planet, being almost exactly 90 degrees above your AC (that point, the nonegesimal, determines the most elevated planet, even when it's very different from the MC).
The evolutionary theory of the nodes is based on the idea of past lives, although it's not necessarily to be taken literally. Based on this south node picture, we could say that in a past life, or over many past lives, you were an extremely driven, high achieving person, and highly visible for your achievement. Recognized.
Aries is also the fieriest of fire signs. It's very given to expending energy. Extreme Aries is prone to expending way too much energy and ending up depleted.
Libra is the counterbalance to that. Libra is the sign of balance. When you have significant placements in Libra, finding balance in your life is a lifelong journey and goal. Not because you have it, but because you don't. Achieving that balance takes constant effort.
So let's say you're coming out of multiple past lives of being driven, expending your energy, and being congratulated for it. This time around, it's caught up with you. You're exhausted. You can't go out there and achieve anymore, you need serious rest and recuperation. You need to bring yourself back into balance. Which is a balance you might not have known for many lifetimes.
I'm not saying any of this is literally true. It's symbolically true. Whether you believe in past lives or not is up to you. One way or another, you've come into this world with an extreme lack of balance and sore need for it.
If there's anything that sums up your life's purpose according to your birth chart, that's it. The rest is detail.