One of my kitchen cabinet doors has been sitting crooked for months, so it would not close all the way and the corner stuck out just enough to catch my shoulder every time I walked past. I kept meaning to fix it and kept not doing it.

When I finally looked, the fix was two screws and a screwdriver. I felt ridiculous for waiting so long.

Most cabinet hinges are adjustable

Modern cabinet hinges, the kind that clip onto the door, have adjustment screws built in. You do not need to loosen and retighten the whole hinge or drill new holes. You just turn a screw.

1. Open the door and look at the hinge where it meets the cabinet.
2. Find the screw that adjusts the door left and right, and the one that adjusts it in and out.
3. Turn the screw a quarter turn at a time, then close the door and check the alignment.

The screw that moves the door side to side is usually the one that fixes a door hanging crooked. The in and out screw fixes a door that sits too proud of the cabinet or too far back.

When the door sags at the corner

If the whole door droops so the top gap is bigger than the bottom, the problem is usually a loose hinge screw. Tighten all of them first, and if one spins without biting, the wood is stripped. Shove a toothpick with a dab of wood glue into the hole, let it dry, then drive the screw back in. That trick has fixed more doors than I can count.

My advice is to mark the original position of each screw with a pencil before you start turning. That way if you make it worse, you can always get back to where you were.

The door closes flush now, and I stopped shoulder checking it every time I walk through the kitchen.