My Chiron Cancer 4th Conjuct his North Node Cancer 8th almost exactly. His Virgo Sun and Virgo Venus in my 6th and both in 6th composite.
“People with this aspect may have a calling or destiny to teach, heal or enlighten others. The subject of healing, teaching, or enlightening may have something to do with letting go of pain and transmuting or transcending it. ” http://astrologynotes.org/wiki/ChironconjunctNorth_Node
this is for a natal chart that’s easily adaptable. Yes your instincts are right. Whenever Node is involved it involes a Life Lesson.