If you are in danger right now, contact your local emergency services. Here are phone numbers. In the US, you can call or text 988. This page can wait.
Depression
This page explains; it does not treat, and it does not present depression as a challenge you could meet with the right approach — that framing would add a failure to a person already unusually willing to believe they have failed. There is one idea worth keeping, stated plainly and then left alone.
The one thing worth keeping
Depression corrupts the readouts. It systematically misreports your worth, your odds, the interest of everything you used to care about, and how much you matter to the people who love you — and it delivers every one of these misreadings with total confidence, as perception rather than opinion. That is why self-assessment under depression cannot be trusted, and why the move is outside your own instruments: other people, and professionals. Not because you are weak. Because your gauges are compromised, and no pilot flies on instruments known to be lying.
Onset
Sometimes it follows something — a loss, an illness, a long depletion — and sometimes it arrives without any reason a biography could supply. The second case deserves saying plainly, because people in it often spend their remaining strength hunting for a justification, or concluding that an unexplained misery must be a verdict on their character. It is not. Depression is a condition, not a conclusion; it can settle on a life that “should” be happy, and frequently does. Onset is usually gradual — less an event than a dimming — which is part of why the person inside is so often the last to date its beginning.
What it changes
Sleep, appetite, and energy, in either direction. Concentration — reading a page and holding none of it. A flattening in which things simply do not taste of anything. Time thickens; small tasks acquire impossible mass; the future shortens until it is hard to picture at all. And because it changes the readouts, it changes behaviour toward the exact people and activities that would help, by reporting them as pointless. Isolation is not a preference the condition reveals; it is a symptom the condition manufactures, and it feeds the condition that made it.
Duration, and one specific lie
For most people depression is episodic — it has arrived, and it can recede — and it is among the most treatable serious conditions there is, by several different routes, though finding the right one can take honest iteration. The condition reports otherwise. It presents itself as permanent, as the truth about you finally seen clearly, as how things simply are. That report comes from the corrupted instrument. It is the same misreading as the rest, and it has been wrong about a great many people who were certain it was right about them.
What description can honestly offer
Shrink the day to what can be done, and count what was done rather than what was not — under this condition, showering can be the whole day’s work, and it counts. Tell one person the truth about how it actually is; secrecy is the condition’s preferred habitat. Let external readings outvote internal ones — if the people who know you insist the situation is better than it looks from inside, they are reading undamaged instruments; borrow them. Make no large decisions on corrupted readouts. And see a professional — a doctor or a therapist — not as a last resort but as the standard move, the way you would for any other condition that changes sleep, appetite, and cognition for weeks. If cost or access is the obstacle, say that to a professional too; routes exist that people inside the condition are badly positioned to find alone.