Anattā is the teaching people bounce off, and I bounced off it too. It gets rendered as "there is no self", which sounds either obviously false — something is clearly reading this sentence — or like a bleak metaphysical claim you are supposed to accept because a tradition says so.
It is neither, and what changed it for me was reading the actual argument rather than the summary. The argument is not about metaphysics at all. It is about control.
The argument, which is oddly practical
In the discourse on the characteristic of not-self — the second thing he taught, to the five who had been with him during the ascetic years — the reasoning runs like this, applied in turn to the body, to feeling, to perception, to mental formations, and to consciousness.
If the body were self, it would not lead to affliction, and it would be possible to say of the body: let it be thus, let it not be thus.
That is the whole move, and I had to read it several times before I saw what it was doing. It is not asserting a hidden fact about the universe. It is pointing at something you can check in the next ten seconds: the thing you call yourself does not take instruction. Tell your body not to age. Tell a mood not to arrive. Tell a thought not to occur. If any of it were yours in the way "mine" implies, that would work, and it does not.
Then the chain, put as questions rather than assertions — he asks and they answer. Is this constant, or inconstant? Inconstant. And what is inconstant, is it easeful or stressful? Stressful. And is what is inconstant, stressful and subject to change fit to be regarded as this is mine, this I am, this is my self? No.
Inconstant, therefore unreliable, therefore not a sound thing to build an identity on. That is an argument, and one that stands or falls on evidence you already have.
What it does not say
It does not say you do not exist. This matters enough that the texts handle it explicitly: asked flatly whether there is a self, the Buddha stays silent — and asked whether there is no self, he stays silent again. Both answers get refused. Nihilism about the person is treated as a wrong view, not as the correct conclusion drawn bravely.
What is denied is narrower and stranger: that among all these changing parts there is an unchanging owner. Not that the parts are absent. That the proprietor is not there when you look.
The reason this is not a technicality is what it does to the instruction. "You do not exist" is a belief you could hold and change nothing. "Nothing here will hold your weight" is a description with an obvious consequence: stop leaning on it.
The tension I actually had
Here is the part I had to sit with, because it cuts against something I have written elsewhere and believe.
What drew me to this in the first place was that everything depends on what you do. No one is coming; the work is yours; the results are yours. That is close to the centre of how I think.
So: if there is no fixed self, who is doing the depending? Who accumulates the kamma, and who gets the results? It looks like the two halves of the thing I found convincing are in direct contradiction.
The answer the tradition gives is that the question smuggles in its own premise. It assumes that for a process to continue, something unchanging has to be carried through it — and that is exactly the assumption being denied. A river carries on for centuries with no water in it that was there at the start. Nothing persists; the pattern does, and it is genuinely continuous, and the continuity is causal rather than substantial.
I am not going to pretend I have resolved this to the bottom. But the shape of the answer is coherent, and it is the same shape as things I do understand: a codebase is unmistakably continuous across years in which every line has been replaced, and it is not therefore an illusion, and there is no essential file that makes it itself.
Not a thesis, a tool
The framing that finally made it usable, and which I gather is the standard reading in the tradition: anattā is not a proposition to be believed. It is something to be applied.
You do not conclude "there is no self" and then live accordingly. You take whatever you are currently clinging to as me or mine — the work, the reputation, the body, an opinion, a state of mind you like — and check it against the three questions. Is it constant? Is what is inconstant reliable? Is this a sound thing to call myself?
Done once as a philosophy exercise it is mildly interesting. Done repeatedly on whatever you are actually gripping, it does something, and what it does is loosen the grip rather than furnish a belief. Which fits the pattern of everything else here — a procedure rather than a doctrine, and one that can fail on its own terms if it turns out not to work.
Where I have got to
I do not experience myself as a process. I experience myself as a person having a day, and I expect that to continue.
What has changed is narrower and I think real. When something I had quietly built an identity on turns out to be temporary — a role, a piece of work, being the person who knows a particular system — the loss lands differently. Less like being robbed, more like noticing that a thing which was never load-bearing has moved.
That is not awakening. It is a small structural repair, and it came from an argument about whether the body takes instruction, which is the last place I would have expected to find it.