Let's talk about the North Node and life purpose. The sign it is in will give you the style of expression you should use to achieve your life purpose, but what is more critical is the house placement and the aspects made to it (especially tight ones). Aspects are very personal, so we're just gonna explore house placements, and this is just a generalization. Your mileage may vary based on your chart.
Remember: your North Node is not comfortable to you. It's opposite, the South Node, is your comfort zone. The North Node is what we need to become, often with struggle (though for some it may be easier than for others, depending on the chart). This is just a basic primer.
NN in 1st house: your life purpose is to be true to yourself. Your South Node will be in the house of others, so your comfort zone will be in acting as a team, but what you need to find is who you really are independently.
2nd house: your life purpose is about values, principles, and resources. Depending on the sign and aspects, this could be about sticking to your guns or transforming your whole value system. It may even be about accruing wealth.
3rd house: your life purpose is to be a student and communicator. You are here to learn something, and possibly to teach it, though in a different way than the opposite 9th house NN. The sign and aspects will tell you what. 3rd house NN is more relative to learning new things or teaching children/beginners.
4th house: your life purpose deals with family. This doesn't have to be a traditional nuclear family model, though that is included. It could be a found family. It doesn't mean you need to have children, just that your life purpose deals with connections you would consider family.
5th house: your life purpose is personal pleasure and self expression. It could possibly deal with children as well. The sign and aspects will give you a clearer picture.
6th house: your life purpose is found in health and your daily routine. This might sound boring at a glance, but even a thing like martial arts could fall under this category. You are here to master oneness in how you live your life, body and mind. Sign and aspect will tell you in what way.
7th house: your life purpose is to live in harmony with a partner. This could be romantic, business, or platonic. You need to overcome your ego to unite with someone else.
8th house: your life purpose could deal with sharing resources (charity), the occult, mastering altered states of mind... the 8th house is about how our values and principles and resources are changed by outside influences. It deals with intense intimacy.
9th house: this life purpose deals with higher learning, philosophy, and travel. While the 3rd house deals with learning new things, siblings, our home town, communication, the 9th house explores topics in further depth, getting to the nitty gritty root of things, whether with in depth research, personal experience, or higher education. A stereotype would be university professor or religious priest type figure.
10th house: your life purpose is what you do for the world. This could be your career or volunteer work, or anything else which falls in to that realm. It is what you do for society, your impact on the world everyone lives in.
11th house: your life purpose is to be involved in your community as a social networking figure. You bring people together, maybe arrange events. You are here to know people and connect with people and to help others connect with each other.
12th house: you could be a martyr (lol) or here for exploring your subconscious. What is hidden from you is what you need to find. You need to seek a deep harmony within yourself and search the inner depths of your mind and soul. This is a highly spiritual life purpose.

















