Left-over Roast Beef Soup

1 lb. left-over roast beef, cubed or 1 lb. ground beef
Is there really any such thing as left-over roast beef? Well at my house I actually try to buy more roast than I need just so that we can have this soup on Mondays. But like I said I try. If I have left-over rolls it's even better on Monday. Hello Monday.:)

Recipe

6 cups water
2 cups tomato juice
1/3 cup onions, coarsely chopped
1 Tablespoon salt
2 teaspoons Worcestershire sauce
1/4 teaspoon chili powder
1 cup celery, diced
1 cup potatoes, diced
1 cup carrots, sliced
1 cup cabbage, chopped

In a large saucepan boil all ingredients until veggies are tender