The sign of Mars says HOW you fight; the house says WHERE your force is spent. They are two different questions, and the second is almost never asked. Mars in Capricorn describes somebody who acts with method and does not give up; Mars in Capricorn in the 6th house describes that same force turning into a tireless worker, and in the 7th it describes the same person negotiating hard with the one she loves. It is another life, with the same sign.

Here the series changes its rule, and it is worth noticing. The house of Mercury and that of Venus are almost always the Sun's or a neighbour of it, because both walk tied to it. Mars is tied to nothing: it can fall in any of the twelve houses, including the one opposite the Sun. That is why this is the reading that most explains what the Sun sign was not explaining.

And there is one thing the house of Mars says that no other says: that is where you have a scar. Mars is the planet of the cut, the accident, the surgery and the fight, its house tends to mark the area of life in which the person got hurt, defended herself and learned to fight. It is not an omen, and it should not be read as a warning: it is where the biography already has a history.

And the hard difference of this series has to be said before anything else: the house depends on the exact time of birth. The whole chart turns about one degree every four minutes, and a house boundary passes in around two hours. Whoever guesses the time does not get an approximate reading, they get somebody else's reading.

Having Mars in the 6th house means you work a great deal and do not always know how to stop. The 6th house is routine, work and health. Mars there puts the force into daily life. This person produces, solves, executes, delivers, and is usually the one holding the operation up while the others discuss strategy.

It is one of the most useful placements in the chart and one of the most expensive for whoever has it. The competence is real: a capacity for work above average, attention to detail and a productive irritation with what is badly done. The price is the body, and it usually collects.

And here is what hardly any text writes down: the scar of this placement is one of health, and it usually has a date. A crisis, an operation, a period of pain, a burnout, almost always after a phase in which the person did not stop. What stayed was not a fear of falling ill: it was the certainty that she has to function. And that is why she goes back to work before she is well.

There is a second piece that changes everything: which sign that Mars is in, the way that force is spent in this area. Mars in the 6th house in Virgo is the extreme of it, technical and tireless; in Pisces, it works too hard for whoever needs it and forgets itself. The house says WHERE; the sign says HOW.

It shows in how much this person manages to get done in an ordinary week. These are concrete signs, the kind you recognise in your own week:

• works beyond what was agreed, and finds that normal
• gets irritated with badly done work, including her own
• has a history of a health crisis tied to excess
• needs exercise, and is unbearable without it
• solves what nobody wants to solve, and solves it fast
• has a real difficulty resting without feeling useless

Notice what this list does not say. It does not say the person is obsessive or too critical, two labels this placement carries and which describe the excess, not the placement. It says her force is spent on the ground of what gets done every day.

The strength is execution: this person delivers. She turns a plan into a finished thing, and does it with a constancy that does not depend on inspiration. Since most projects die between the idea and the execution, that is one of the least common and worst-paid competences there is.

In practice that turns into three useful things: a real productivity that holds a whole operation up; a technical or manual competence that becomes a craft; and an ability to organise a routine that improves the life of whoever is near.

That strength does best in health, technical craft, operations, maintenance, nutrition, sport and any work in which doing it well is the product. And it does badly in a disorganised environment with no criteria, in a post that is all meetings and in any arrangement where the effort does not show in the result.

There are two, and they are opposites: the excess is work turning into the body, and the deficiency is somebody who switched the engine off precisely in this area of life. The Shelly Method reads every archetype through four faces, the light, the shadow, the excess and the deficiency, and it is the last of them that hardly any text mentions.

The excess is not stopping: the person works while ill, postpones the appointment, turns rest into a task and then breaks down all at once. It also shows up as criticism of other people's pace, the irritation with whoever is slower, said out loud, which ruins a good team.

The deficiency is the opposite and goes unnoticed for years: the person stopped reacting here, and calls that patience. Here she is the person who lost the routine. After a burnout or a job that ground her down, she became unable to keep anything up, not training, not a schedule, not a craft. From outside it looks like laziness, and it is not: it is an engine that was forced until it tripped, and it only comes back with a small, steady load.

Both faces have the same raw material, and that is why the repair is the same: a force that needs a schedule, and not less work. It is not solved by asking the person to relax, rest with no rule is, for her, anguish. It is solved by scheduling it: the day that ends on time, the day of the week with no task, with the same seriousness as a work commitment, and that is what the sign of Mars and the rest of the chart show.

Every house has a pair, and the pair of 6 is house 12. They are not separate themes: they are the two ends of the same pair, and the excess in one shows up as a lack in the other. The 12th house is the opposite: rest, the useless, what serves no purpose. It is exactly what this placement lacks, and not as a prize after the delivery, but as maintenance of the machine that delivers.

Whoever has Mars in the 6th and has nothing in life that is pure spending with no function ends up stopping through illness, which is the expensive way of resting. Time with no usefulness is part of the craft.

It matures when the person learns to stop before the body orders it, and that learning is worth more than any attempt to learn to work less. The capacity to deliver stays the talent; what changes is that it stops being paid for with health.

There are two rhythms that help to understand the arc, and both belong to Mars itself: the return, every two years, which turns the cycle of this house and calls for a fresh start; and the retrogradation, every twenty-six months, for some nine weeks. In those weeks the subject of this house tends to ask for review, and here they usually stir up routine, a postponed test and the work arrangement. It is a good moment to book the doctor and renegotiate the load, and a bad moment to take on one more thing.

Maturity here is not learning to do less. It is the person coming to distinguish the work she does because it is hers from the work she does so as not to stand still. A mature Mars in the 6th house goes on delivering, and comes to have a time to finish, and it is that time that turns burnout into a craft.

No honest text gives an age for this. The arc depends on the whole chart and on the life the person had.

It says where your force is spent, and not whether you will win the fight. The house is the address; the result is your life.

Which sign that Mars is in changes the whole manner: Mars in the 6th house in Sagittarius works in bursts and disappears afterwards; in Taurus, it keeps the same pace for twenty years and changes for nothing. See the series Mars in the 12 signs.

And your Sun does not help you guess this house, unlike what happens with Mercury and Venus: Mars falls in any of the twelve. The other half of the pair is Venus, she shows what attracts, and Mars, what gets done about it. See the series Venus in the 12 houses.

One limit said out loud, because it is part of reading seriously: none of this is prediction. Astrology describes a tendency and gives vocabulary for what the person already lives; it does not announce an accident, does not promise victory and does not replace your own decision.

And the questions that come up most on this subject, with the short answer: