Your mother lets herself in. Your father asks what you paid for the car. Somebody rings four times in a row because you did not answer twice, and when you call back it turns out there was no emergency, only the fact that you did not answer.
None of it is cruelty. That is what makes it difficult to name. It is a set of habits from a period when they were responsible for you and you were not responsible for yourself, and nobody sent round a form when that arrangement ended.
What follows are the sentences. Take the ones you need.
Coming over
1. When they let themselves in
"I need you to text before you come. Not because anything's wrong — because it's our house."
2. When the key is the problem
"I'd like the key back. You're welcome any time you tell me you're coming."
Expect that one to land hard. It is the one that says out loud that this is a house you live in and they visit.
3. When they turn up anyway
Do not let them in and then raise it afterwards. Raise it at the door, warmly, once:
"You should have called. Come on, the kettle's on — but call next time."
The phone
4. When they ring repeatedly
"If I don't pick up, I'm busy. I'll ring you back the same day. Four missed calls makes me think somebody's died."
5. When they want daily contact and you do not
"Sundays work for me. I'll call you Sundays."
Then call on Sundays. A boundary you do not keep is a suggestion.
6. When they read something into the gap
"I wasn't upset with you. I was at work."
Money
7. When they ask what things cost
"We're fine, honestly." Then move on. It is not an answer, and it is not meant to be.
8. When they offer money with strings
"If it comes with a say in how we spend it, we'll pass. If it's a gift, thank you."
9. When they need money and you cannot
"I can't do that. I can help you sort the paperwork out on Saturday."
Advice you did not ask for
10. About your children
"We're doing it differently. It's going fine."
Do not explain the method. Explaining invites debate about the method, and now you are defending the sleep routine to a woman who raised you in the seventies.
11. About your marriage
"That's between us."
Four words, whole sentence, no expansion.
12. When it happens in front of other people
"Let's not do this here."
Then talk about something else immediately. Do not wait for agreement.
The hard ones
13. When they use your childhood as an argument
After everything we did for you.
"You did a lot for me. I'm still not doing this."
Both halves matter. Denying the first makes it a fight about the past; agreeing to it makes it a debt.
14. When they will not stop and you need it to end
"I'm going to go now. I'll call you Sunday."
Then go. Not as a threat and not slammed. The call ends, and it ends on Sunday as promised, and that is how the sentence teaches them it was true.
Three things that make all of these work
Say it once. The second and third time you explain, you are negotiating, and they can hear it.
Do not schedule it. "We need to talk" turns a two-line correction into an occasion, and occasions have sides.
Keep the good things separate. Ring on Sunday. Send the photograph of the children. A boundary is not a punishment, and if it starts to function as one, they will treat it as a mood to be waited out.
What this will cost
Somebody will say you have changed. Somebody usually means it as an accusation, and you will have to decide to hear it as a description.
There may be a period of hurt silence, or the specific tone your mother uses when she is being very careful with you. It passes. It passes faster if you keep the Sunday calls while it is happening.
Set against that: the alternative is not peace. The alternative is a version of these conversations happening anyway, in fragments, for another twenty years, with you angry about a phone call and unable to say why.
One story and one script, once a week
No advice you have read before, and nothing we would not say to a friend at our own kitchen table.
The list opens shortly. We would rather have nowhere to put your address than pretend to collect it.