Mars and Jupiter in Libra 9th house, and North Node in Sag in the 12th.
I see Jupiter(Expansion, fortune, higher knowledge ) in Libra(balance-and geometry/maths-also nature) as quite rational and scientific in the 9th, so maybe that is consistent with a both a spiritual search but it not being fulfilled by the confines of one religion or culture, and needing higher learning incorporated.
With Sag NN in the 12th, the Sag does imply the 'right brain', intuition, higher truth but it doesn't have to be literal or religious.
The 12th is also spiritual with the Pisces link, and with the SN in Gemini in the 6th, which is like Mercury x2, your NN seems to be asking you to be much more intuitive(both Sag and Pisces/House 12 traits) and let go from over-rationalising. The Pisces is more about pure intuition, the intangibles, whereas as Sag is more learning related IMO.
It could be about taking quite an intellectual approach to the search for meaning rather than the narrow confines of one traditional or cultural practice. It might be learning about science, philosophy etc, and finding a synthesizing belief system or maybe just simple practice that give you both spirituality and reason.
I have Fortune in Sagittarius and Ninth house North Node so I relate to some of these issues.
Also, have you thought of astrology as part of a spiritual practice or search for meaning? It may be that you are finding your way simply by finding....it. I know this was true for me.
Had to edit that as I mistook Saturn for Jupiter.