North Node or Rahu is the point in the birth chart that determines the mission and purpose. This is what we strive for, our ideals and expectations that we want to achieve in practice in relation to this life. North Node gives us the tools with which we can solve problems in a past life, but is also a challenge.
Everyone in life needs out of the comfort zone, the exit depends on what our priority. If we can get border security because of the importance of priorities, we get a chance to use their potential in other areas. One we might not be priorities, or are other people. Therefore, the North Node way of helping others, not only to sustain their development.