I have pondered my annoying 6th house stellium for decades and decades...
Libra is on the cusp of my sixth, and I have Saturn tightly Conjunct Neptune and Spica in Libra. Then the Sun conjunct Neptune @ Zero Scorpio. And Mercury is conjunct the Descendant @ 18 Scorpio.
So I have Saturn, Neptune, Spica, the Sun and Mercury in the 6th, in Libra/Scorpio.
One interesting and perhaps surprising thing is that at age 64, I take no medications whatsoever, and have only been hospitalized for an illness two times in my life. Once when I was in college and once last year for an asthma attack.
But many Astro books speak of 6th house stelliums as an indication of many chronic health issues. So far I have avoided that trap.
There are some things that I do attribute to my 6th house crowd. I have Aquarius on the MC with the North node there in Aquarius. And I do think that was an indication of my unusual decision to become a professional astrologer in the 70's and early 80's.
But my 6th house stellium , with Sat/Nep conjunct the Sun,helped to create my difficulties figuring out a clear and easy way to make a stable financial foundation. I gave a lot of readings away in trade and bartering, kept lousy book keeping, and was not efficient. There were no computers yet to do all of the calculations and the drawing of the charts. I did have that eventually, but in the early years, it was very time consuming to calculate all the charts, progressions and synastry and to draw them out by hand.
Anyway, my 6th house of servitude seemed to take over in those decades. I was s slave to my chosen career, although I did love it. But it was not very lucrative for me.
I got married during my Saturn Return in Libra. And I became a 'stay at home' mom for many years. And again, that was my 6th house stellium playing out. But I did LOVE that period of time. We had two kids and 5 or 6 pets and I was in charge of all of them.
I think my 8th house Moon in Cap saved me from my 6th house stellium. It allowed me to see the BIGGER PICTURE and to understand why the 6th house had so much power in my life this time around.