What's a green flag habit that keeps you and your spouse on the same team?

We've had a stressful month, but instead of snapping at each other, my husband started asking, how can I make your 5:00 pm easier? It's such a small shift, but it stopped the who's more tired competition immediately.

Being on good terms feels less like romance and more like having a reliable teammate.

What's a small habit that keeps the peace in your house?