The conversation about her worth is a hundred conversations

Count the things you praised your daughter for this week. Actually count them. Then sort them into two piles: things about how she looks, and things about what she did, chose, made, fixed or stuck with.

Most dads find the appearance pile isn't bigger. It's louder. The compliments about how she looks get delivered at the door before school, face to face, at full volume. The others get mumbled at a laptop screen. She's doing arithmetic on that, and she isn't doing it consciously. She's working out what gets noticed in this house, because that's the first market she's ever traded in.

So the job isn't a speech. It's a running tally she keeps without knowing she's keeping it, and you're the one filling it in.

Make the praise specific enough to be useful

"You're amazing" is noise. She'll discount it by about age nine, and she should, because you'd say it whatever she did.

"You stayed with that maths problem for forty minutes when you wanted to quit at ten" is information. It tells her what you saw and what you value. Name the behaviour. Name the cost it took her. That's the difference between flattery and a mirror.

Praise the unglamorous stuff most of all. She rang the dentist herself. She apologised first. She told the truth when a lie was available and would have worked. She was kind to a kid who couldn't do anything for her socially. Those are the things that will still be paying her back at forty.

And keep telling her she looks nice. Some fathers overcorrect into silence on the subject, which sounds principled and isn't. It just leaves a vacuum, and vacuums get filled by whoever's willing to talk. Say it. Just don't let it be the headline every single time, and don't let it be the thing you say when she's dressed up and never when she's in a hoodie with wet hair.

Give her standards before she needs them

Worth is abstract. Standards are usable. Hand her a short list of questions she can apply to a friend, a boyfriend, a boss or a landlord, and you've given her something with a longer shelf life than any pep talk.

• Does he speak about you the same way when you're not in the room?
• How does he act when you say no to something small?
• Does he like it when you're good at something, or does he go quiet?
• Does he get on with your friends, or is he slowly working at separating you from them?
• Can he apologise without attaching "but" to the end of it?
• Do you feel more like yourself around him, or less?

Teach these years before there's anyone to apply them to. It's far easier to hand someone a ruler in peacetime than to argue about a measurement while she's standing in the middle of it, defending someone she likes.

Let her practise saying no where it's cheap

A girl who can't tell a friend she doesn't want to go to the thing will struggle to hold a line when the stakes are higher. The skill is the same skill. It just gets practised on small stuff first.

Which means you have to stop overriding her small refusals. If she doesn't want to hug the relative, back her, and take the awkwardness yourself. If she wants to quit a club she genuinely hates, listen properly instead of defaulting to "we don't quit". If she says she's full, she's full.

You're not being soft. You're demonstrating that her no registers at home, because home is where she finds out whether a no registers anywhere.

Plenty of things will still be non-negotiable. She doesn't get a vote on the seatbelt or the bedtime or the tone she uses with her mother. The point isn't that she runs the house. The point is that where she does have a say, it works.

She's listening hardest when it isn't about her

How you talk about her mother. How you talk about women on television, women at work, the woman who cut you up at the junction. Whether you laugh along at a friend's joke because it's easier than saying anything.

She takes the going rate from what her father tolerates in the room. If a demeaning comment costs nothing at your table, she files that. Later, when someone talks to her that way, some part of her will register it as normal weather rather than a problem.

You don't need a lecture. A flat "Don't" does most of the work, and it costs you about a second of social friction. Not saying it costs considerably more, on a delay of about ten years.

Same principle with your own marriage. She's watching a man be married. Whatever she sees, she'll recognise it later as familiar, and familiar is a powerful thing when you're nineteen and trying to work out if something feels right.

The rule that matters more than any of it

Give her one sentence and repeat it until she rolls her eyes: call me, any hour, from anywhere, no matter whose fault it is, and there'll be no interrogation that night.

Then honour it. That's the whole trick. The first time she tests it and you keep your side, the rule becomes real. The first time you break it and start asking questions in the car at one in the morning, it's gone, and you won't get it back.

Consequences can still exist. They just live on a different day. The pickup is not the moment.

This belongs in a conversation about worth because a girl who expects humiliation for a mistake will hide the mistake, and hiding is where nearly all the serious damage happens. Being someone she can tell the bad thing to is worth more than every talk you'll ever give her.

Worth is not the same as being owed

Skip the princess framing entirely. It sets her up to expect deference, and the world doesn't hand that out.

The better version is that dignity cuts in every direction. She's worth something. So is the kid nobody sits with, so is the man clearing the table, so is the person she disagrees with online. If faith is part of your house, you already have the cleanest version of this: worth that was given rather than earned, which means nobody can revoke it and she doesn't get to hand it out selectively either.

Back it up by making her do hard things. Carry her own bag. Handle her own return at the shop. Learn to drive, change a tyre, cook four meals, sit an exam she's afraid of. Competence is load-bearing. A young woman who knows she can handle herself walks away from bad situations faster, because she's not calculating how she'd survive on her own.

Where the talking actually happens

Not across the kitchen table with a serious face. That's an ambush and she'll treat it like one.

Side by side. Driving somewhere. Washing up. Walking the dog. Ask one question, then stop talking for longer than feels comfortable. Most of what you want to know arrives in the silence after you've given up on it.

And ask what she thinks about things that aren't about her. Politics, the news, whether you handled something at work properly. Then let her change your mind occasionally, out loud, so she hears it happen. A girl whose opinions have moved her father learns she can move a room.

You'll get this wrong regularly. You'll be short with her, dismiss something that mattered, praise the wrong thing. Apologise specifically, name what you did, and leave off the "but". A rupture you repair teaches her more about how she deserves to be treated than a month of smooth sailing ever will.

She's going to carry a voice in her head that tells her what she'll put up with. It'll sound like somebody.

Might as well be you.