Don't be partial to your own child.

别护着自己的孩子。

《新英汉大辞典》

I think you have to respond to your own child; you know what they can handle.

我认为你应该对你自己的孩子作出回应。你知道他们能承受多少。

youdao

If you start supporting only your own child, then the child becomes quite clever.

如果你只支持你自己的孩子，那么这个孩子会变得相当聪明。

youdao

"My father," Beatrice said weakly, "why did you do this terrible thing to your own child?"

VOA: special.2009.05.30

Nephew, niece, your own child, does not matter.

FORBES: How Entrepreneurs Can Beat The Holiday Blues

One of the questions many are forced to answer as they start IVF is: Which do you want most, to have your own genetic child or to be a parent?

FORBES: The Baby Chase: An Adventure In Infertility

Talking to group members can help you cope with your own feelings about your child's condition.

CNN: Progeria