Adult Sibling Rivalry: Old Family Roles That Come Back

The short answer: old family roles come back at your parents’ table, and your children are watching. Step out of the old role once, calmly, and show them a better way.

Dear reader,

You walk into your parents’ house for the holiday meal. You are a grown adult. You have a job, a home, perhaps children of your own. People at work trust your judgment.

And within ten minutes, you are twelve again.

Your older brother is giving orders, as he always did. Your sister makes a comment about your weight, or your parenting, or your choices, in that tone you know so well. Your mother asks your brother’s opinion and ignores yours. You feel yourself shrinking, or getting angry, or going silent, exactly as you did as a child.

This letter is about those old roles, and how they follow us into adult life. I believe they matter for one reason above all: your children are watching how you and your siblings treat each other. The way you speak to your brother at your parents’ table is a lesson in how brothers speak to each other, and your own children will carry it to their table in thirty years.

The roles we were given

In many families, children are given roles, often without anyone deciding it. The clever one. The pretty one. The responsible one. The baby. The troublemaker. The peacemaker. The one who never needs anything.

These roles may have helped the family work in some way. The responsible eldest looked after younger siblings while parents worked. The peacemaker calmed the storms. The “difficult one” carried the family’s tension.

But roles that made sense at eight can feel like a cage at forty. And when siblings gather, especially around parents, the old roles often snap back into place.

Why it happens

Family gatherings put us back in the original setting: the same table, the same people, sometimes the same arguments. Old patterns are deeply learned. Even small things, a tone of voice, a look, a familiar joke, can trigger them.

Siblings also hold memories of each other that no one else does. They remember who we were before we became who we are. That closeness is precious. It can also be painful, when they refuse to see who we’ve become.

What your children see

If you have children, they are watching too. They see how you speak to your siblings. They see whether you are respected or dismissed at the family table. They see old rivalries play out between adults, and they may learn that this is how brothers and sisters treat each other, for life.

They may also pick up the family’s labels. “Your uncle was always the lazy one.” “Your aunt thinks she’s better than everyone.” Labels about adults can travel down to the next generation.

What can help

Notice the role. Before the next gathering, ask yourself: What role do I fall into with my siblings? How do I feel when it happens? Naming it can loosen its hold.

Choose one small change. If you always go silent, say one thing. If you always argue, let one comment pass. If you always rescue, let someone else step in.

Speak to your sibling directly, if it’s safe. Sometimes, a calm, private conversation can shift a pattern that has lasted decades: “When you say that in front of everyone, I feel like a kid again. Can we try something different?”

Don’t involve your children. Keep adult sibling conflicts away from them. Let them form their own relationships with their aunts and uncles.

Look after the sibling bond in your own children. Avoid labels and comparisons. Let each child be more than one thing. What you do now shapes the family table your children will sit at in thirty years.

Protect yourself if needed. If a sibling is cruel or harmful, you can limit contact, keep gatherings short, or bring support with you. Not every relationship can be repaired, and that is not your failure.

The roles you are giving now

It can be worth looking at your own children, too. Is one already “the sensible one”, another “the funny one”, another “the problem”? These roles may feel harmless now. They may be the roles your children carry to your table in thirty years.

Notice when a label is used, and gently widen it: “She’s sensible, and she’s also very funny.” Each child deserves to be more than one thing.

When parents are ageing

As parents age, sibling roles often come under new pressure: who visits, who cares, who decides about money and health. Old patterns can return strongly. The “responsible one” may end up doing everything. The “baby” may be left out of decisions.

It can help to talk openly and early about how care will be shared, perhaps with a neutral person present. Your children will watch how you handle this too, and may one day care for you in the same way.

When siblings are a gift

Not all sibling relationships are hard. Many adult siblings are each other’s closest support: the person who remembers your childhood, who laughs at the same jokes, who shows up when a parent dies. If you have a sibling like that, it is worth telling them.

If you are the parent of adult children

If you are reading this as a parent whose grown children don’t get along, you have more influence than you might think. Avoid comparisons, even now. Speak to each child as the adult they are. Don’t carry messages between them. And when you can, tell each of them, separately, what you admire in them.

This week

Before your next family gathering, write down one role you fall into, and one small thing you’ll do differently. Then, during the gathering, notice what happens when you do it.

The table may still be the same. But you are not the same child who first sat at it.

With respect,

Our Family Blueprint

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Next step

Look at the pattern in your family. Answer a few questions about what keeps repeating, and get a 7-day sheet. Pattern Check →