Psychology · What the chart says
Overthinking: what your birth chart says about thoughts that go round in circles
The Mon thème team6 min read
It is one in the morning and you are replaying the scene for the tenth time. What you should have answered, what the other person meant, that small silence at the end of the sentence. Overthinking is not the same as thinking: the mind passes the same spot ten times without moving forward. Almost everyone knows the feeling, but not with the same intensity, and a birth chart shows quite well why.
The subject is timely. On 11 November 2026, Mercury, the planet of thought, is retrograde at 5° Scorpio and almost motionless before it turns direct on Friday. It forms a square with Pluto, at 3° Aquarius. A mind slowing down, in the sign that digs, under pressure from the planet that never lets go: this is the very climate of going over and over things, and a good moment to understand how it works.
Why some people overthink more than others
Overthinking is not a lack of willpower. It is a way of thinking: in depth rather than in breadth, with a need to get to the bottom of something before letting it go. Until the bottom is reached, the thought comes back.
In astrology, this way of thinking is read first in Mercury: its sign, its house and, above all, the planets that touch it. A light Mercury moves on to something else. A Mercury tied to Pluto or Saturn wants a final answer, and is still looking for it when everyone else is asleep.
Which birth chart placements point to overthinking
No placement ‘condemns’ anyone to brood. But certain signatures turn up often in people who recognise themselves in this pattern.
- Mercury in aspect to Pluto (conjunction, square, opposition): a detective’s mind, which suspects a hidden meaning and does not stop until it has found it.
- Mercury in aspect to Saturn: the need to have done it right and said it right, and a harsh review of every sentence spoken.
- Mercury in Scorpio, or in the 8th or 12th house: a mind turned towards what goes unsaid, working quietly and for a long time.
- Moon and Mercury in tension: feeling restarts the thinking, thinking restarts the feeling, and the loop keeps itself going.
What the Mercury-Pluto square of November 2026 stirs up
The general climate, for everyone, is that of a mind that digs. An old conversation resurfaces, a message is reread three times, something left unsaid suddenly takes up a lot of room. Because Mercury comes to a halt at 5° Scorpio on 13 November before moving forward again, the square to Pluto stays tight for several days.
But not everyone receives it in the same way. Someone born with Mercury around the same degree of Taurus, opposite the current Mercury, may experience these days as an inner tug of war: the urge to decide against the urge to re-examine everything. With a natal Mercury around the same degree of Cancer or Pisces, in trine, the same passage feels more like a clarity that comes easily.
And if nothing in your chart sits near these degrees? The transit remains a background climate, noticeable without being overwhelming. That is why the same transit does not make everyone react alike, and it is not astrology getting it wrong.
How to turn looping thoughts into a strength
Rumination is analytical power with no case to work on. Give it a real question and it becomes what it truly is: a rare ability to understand what others skim over.
- Turn the loop into a precise question: not ‘why did he say that?’ but ‘what do I want to say to him?’.
- Write. Mercury needs words set down somewhere: a thought on paper stops demanding to be repeated.
- Set an end point. Twenty minutes to dig, then a decision, even a provisional one. Pluto respects what has been settled.
- Give this mind ground worthy of it: a piece of research, a text, a complex problem. That is where it excels.
- Mercury retrograde at 5° Scorpio, in a tight square to Pluto at 3° Aquarius.
- Mercury turns direct at 5° Scorpio (16:55): thinking gets moving again.
- Venus turns direct at 22° Libra (01:21): relationship questions begin to settle.
- Sun sextile Pluto exact (18:27): what has been dug up becomes usable.
- Mercury enters Sagittarius (09:34): the mind leaves the depths and regains some perspective.
What this sky teaches
Today’s law
A thought that keeps coming back is not asking to be repeated: it is asking to be concluded.
Mercury facing Pluto teaches that depth has a price: you cannot think far without the risk of going round in circles. The way out is not to think less but to think it through to the end, which means through to an act: a sentence spoken, a letter written, a choice you stand by.
This sky is also a reminder that the loop often protects something. As long as you keep replaying the scene, you do not have to decide what to do about it. Recognising that, without judging yourself, already loosens the knot.
- What decision is my overthinking helping me avoid?
- If this thought were a question, who should I be asking?
- On what subject would my ability to dig deep be a real asset?
And in your chart?
Everything above describes the general climate; what you make of it depends on your natal chart. Take someone born with the Moon around the same degrees of Leo: Mercury squares it, Pluto opposes it, and it is their need for emotional security, not their logic, that feeds the loop over these few days. To place yourself, check whether a natal planet or angle sits between 3° and 5° Scorpio or Aquarius, or around the same degrees of Taurus and Leo. Then find the house that holds 5° Scorpio: it shows the area of life your thoughts keep returning to. With nothing at those degrees, you are simply moving through a more introspective mood. Either way, your natal Mercury remains the first key, and it is worth looking at what this sky touches in your own chart.
And for you, precisely?
This text describes the sky for everyone; each of us lives it through our own chart. Calculate yours once (free, 30 seconds): on every Decoded page, this box will show you what this sky touches in you. With a free account, your chart stays saved.
See what this sky touches in me✦ The technical point
What is a square between Mercury and Pluto?
A square is a 90-degree angle between two planets: they sit in signs that share neither the same pace nor the same aim, and each forces the other to adjust. Mercury stands for thought, speech and the way we connect pieces of information. Pluto stands for what is buried, what insists, what transforms at depth. In square, they produce an intense, penetrating mind that has little patience for superficial answers. Today the gap between the two is a little over two degrees: this is called a tight aspect, so it is clearly felt. In a birth chart, the same square points to a remarkable investigative mind that needs to learn how to reach a conclusion.
Frequently asked questions
Which planet causes overthinking in astrology?
Mainly Mercury, the planet of thought, when it is linked to Pluto or Saturn in the natal chart. Pluto brings insistence and the need to get to the bottom of things, Saturn brings high standards and self-criticism. The Moon also plays a part when emotion keeps restarting the thinking.
Does Mercury retrograde make you dwell on the past?
Mercury retrograde invites you to review, reread and reconsider: it naturally brings old subjects back to mind. It is not a sentence handed down, but a climate that favours taking stock. In November 2026, it turns direct on the 13th at 5° Scorpio.
How do I stop overthinking according to my birth chart?
Start by looking at your natal Mercury: its sign, house and aspects show what your mind is really looking for. Then give it a concrete outlet: write, frame a precise question, make a decision, even a provisional one. Overthinking eases when thought leads to an act.