Short answer: When a sibling doesn’t help with an aging parent but criticizes the care you give, answer with facts, set clear limits, and refuse to copy their tone. Marcus Aurelius warned against treating unkind people the way they treat others. Matching a critical sibling feels fair, but it hands them control over who you become during the hardest years of caregiving.
It is 9:40 on a Tuesday night, and you just got your mother settled after her second bathroom trip since dinner. Your phone buzzes. It is your brother, who has not visited since Easter, asking what the $312 at CVS was for.
You start typing a reply that lists every copay and every package of adult briefs, and ends by asking when he last changed a wet sheet at 3 a.m. Every word of it is true. It is also exactly the tone he just used on you.
How do you deal with a sibling who doesn’t help but criticizes?
Marcus Aurelius was emperor of Rome. He wrote private notes to himself during years of war on the northern frontier, around the time a trusted general tried to seize his throne. One note is a single line.
“Take care not to feel towards the inhuman, as they feel towards men.”
Marcus Aurelius, Meditations 7.65 (George Long translation)
In plain words: when someone treats people badly, do not start treating them the same way.
Why this hits differently when you are a caregiver
Most advice about difficult people assumes you can leave. Stop answering. Skip the holiday.
You cannot do that. Your brother is still your mother’s son. He may be on the bank account or the list of people the hospital calls. You will deal with him next week, and the week after, for as long as this lasts.
And it is not one insult you can file away. It repeats. First the pharmacy bill, then why Mom lost weight, then whether she would be better off in a facility. Each one lands on someone running on four hours of sleep.
So the pull to match him is not irrational. You are doing the work, and the person doing the least is the one keeping score. Wanting him to feel some of that is a normal response.
Marcus is not asking you to pretend it is fair. Every time you answer contempt with contempt, the person who wronged you gets to decide how you talk, what you replay in the shower, and who you are when you finally lie down at night.
There is a second reason this matters for caregivers. The sharpness you practice on your brother does not stay in the text thread. It follows you into the kitchen. It shows up in your voice when your mother asks the same question for the fourth time. You cannot afford to spend what is left rehearsing arguments with someone a time zone away.
Being unlike him does not mean being soft. It means sending the reply you would still stand behind a year from now, and five years from now, when all of this is over.
One thing you can do today
This is the two-sided card. You need an index card, or the back of an envelope, and a pen.
On the front, write what he actually does. Describe the behavior, not the person. Not “he’s selfish.” Instead: “He questions my spending without asking what it was for.” One accurate sentence.
On the back, write the opposite as something you do. It has to be an action, not a feeling, and it has to be fully in your control. If he accuses before asking, the back might say, “I state the facts once, then stop.” If he goes silent for weeks, it might say, “I tell him what I need, in writing, with a date.”
Notice what the back does not say: “be nice to him” or “let it go.” Being unlike him can include a firm limit, a short answer, or no answer until morning.
Keep the card where the contact happens. Tuck it in your phone case or the car visor. Before you answer him, read the back. Then write your reply. That is the whole exercise.
When it gets hard
Some nights you will send the sharp message anyway. That does not mean the card failed. Marcus wrote this reminder to himself because he needed it more than once. Skip the long apology. At the next contact, read the card first.
If the anger comes back hot, write the reply on paper first and leave it until morning. Then read the card and decide what goes out.
If you notice the back of your card drifting toward “keep the peace no matter what,” rewrite it. The goal is to act like yourself, not to disappear.
Sit with this
What has your sibling’s behavior been quietly training you to become, and is that something you want to keep once the caregiving is over?
Going deeper with this lesson
The two-sided card is one of four practices in Lesson 24. The book adds the other three, a full written reflection, a journaling prompt, and a worksheet page. Volume 2 takes on the hardest relational parts of caregiving: family conflict, anger, guilt, and what happens to your sense of self when the role takes over.
