Squint until the chair becomes one dark shape and the window one bright one, then draw those first. Drawing the gaps between things, not the things themselves, often gets the proportions right without you trying.

Let bread dough rest for ten minutes before you shape it. The gluten relaxes while you wait, so it stops fighting you and stays where you put it.

Squint until the chair turns into one dark shape and the window into one light one. Then draw those two shapes first. Your eye stops arguing with the details.