In a large skillet over medium heat, cook the ground beef until browned, about 5-7 minutes. Drain excess fat if necessary.
Stir in the taco seasoning and 1/4 cup of water. Simmer for 5 minutes until the mixture thickens.
In a large bowl, combine the cherry tomatoes, corn, black beans, shredded lettuce, and diced avocado.
Add the cooked ground beef to the bowl and mix gently to combine.
Serve the salad by layering it with shredded cheddar cheese, salsa, and sour cream on top.
Just before serving, crush the tortilla chips and sprinkle them over the salad for added crunch.