Most sleep advice fails for the same reason most diets fail: it describes an evening nobody actually has. The version below is deliberately short. It is drawn from general sleep hygiene guidance such as the NHS Every Mind Matters sleep pages, and it stops at the point where the guidance stops agreeing with itself.
Going to bed at wildly different times is normal and hard to control. Getting up at roughly the same time every day, including at weekends, is the single step that most sleep guidance puts first. It is also the least pleasant one, which is presumably why it is rarely the part people adopt.
Give yourself a 20 to 30 minute buffer between the last demanding thing and getting into bed. What fills the buffer matters less than the fact that it exists: tidying the kitchen, a shower, reading something undemanding, writing down tomorrow's first three tasks so they stop circling.
Writing the list down is the one worth trying first if your problem is a mind that will not stop rehearsing the next day. Getting it onto paper does not solve anything, but it removes the need to keep holding it.
Dim the room in the last hour where you can. A cooler bedroom is generally recommended over a warm one. Both are cheap to try and easy to reverse if they make no difference to you.
The common advice is no screens for an hour before bed. The realistic version: what usually costs you the sleep is not the light from the phone but what is on it — a work message, an argument in a comment thread, an autoplaying feed with no end. If a full hour without a screen is not going to happen in your household, the more achievable swap is to move the phone out of arm's reach of the bed and keep whatever you read on it undemanding.
Lying there doing sums about how many hours are left tends to make things worse. Common guidance is to get up after about 20 minutes, go to another room, do something quiet and dull in low light, and go back when you feel sleepy. It feels counter-productive and often is not.
Routine advice is for ordinary bad sleep. Persistent insomnia, loud snoring with daytime exhaustion, or sleep problems that arrive alongside low mood are not habit problems, and no evening routine is the right answer to them — those are worth taking to a doctor. Nothing here is a reason to delay doing that.
This article is general information about everyday habits. It is not medical advice, diagnosis or treatment, and it is not a substitute for talking to a qualified professional about a health concern.