(the abbreviated word is "constructively".)
If your wife is anything like me, she will make quite a few mistakes, whether from poor executive function, laziness, being too tired or busy, or whatever. Please don't take her shortcomings personally.
If you find that the dome light in the car is on overnight again, there's bread left in the toaster that is attracting bugs and the dryer turned off because the lint filter was full and the towels are still wet, just state the facts in a VERY simple way: "The dome light was on in the car when I got home." DON'T say, "You left the dome light on yet again. We're going to have a dead battery soon if you keep on doing that."
Give her a moment to apologize and/or explain, then follow up with a kind word: "By the way, I like your hair parted that way," or, "Thanks for folding up all that laundry, by the way. I'm glad you are my wife, and I love you."
If you do this, your wife will feel cherished and valued, and not be sitting at her computer at work crying and feeling like a fu*k-up. You are her partner, not her supervisor.
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"Lonely is as lonely does.
Lonely is an eyesore."