Your Gemini Sun shows the impetus for versatility, communications and the use of the mind.
The Nodal axis falls across the 6th /12th axis, indicating the need for moving away from the particular and detailed attention of the 6th and developing more spiritual growth through the 12 H through contemplation and inner reflection. Neptune rules your 9th H, so the process would involve resolving the dilemma of the opposition with Mercury /Venus. 12th H NN calls for you to seek sanctuary away from the distractions of the material world in search of self-awareness. This shows you have earned the right to take the deep pleasures of the unconscious: gifts of magic, insight and deep peace.
All the troubles with health and employment will need to find resolution through the 12th H.Read more here:
"http://northnodeastrology.blogspot.ca/search/label/South%20Node%20in%206th%20or%20Virgo"
With this in mind then, Pluto in the 4th shows the necessity of purging yourself of the emotional baggage carried over from the past connected to your your childhood conditioning