First, make your bed. (You’ll need it as a workspace.) Start with your flat surfaces (dresser, nightstand, etc.). Clear them off. Deal with the floordrobe. Hang it, fold it, wash it, or donate it. Shoes go back where they belong. Dirty clothes in the hamper. Random piles of shit get dealt with one at a time. Then dust. Then vacuum or sweep. The flop down in your made bed and admire your hard work.