In a skillet over medium heat, brown the ground beef until fully cooked. Drain excess fat if needed.
Stir in taco seasoning and water. Simmer for 5 minutes until the mixture thickens.
Heat tortillas in a dry skillet for 30 seconds per side until soft and warm.
Add seasoned beef to each tortilla and top with lettuce, tomatoes, and cheese.
Add sour cream and salsa as desired. Serve immediately and enjoy!