Dice the tomato, onion, carrot, potato, and zucchini.
Heat olive oil in a pan and sauté the onion.
Add the carrot, potato, and zucchini, and continue to stir-fry.
Add the tomato and cook until softened.
Add curry powder and water, then bring to a boil.
When all ingredients are cooked, season with salt and pepper to taste.