Pre-heat a non-stick pan on a stove. Put ground beef into the pan.
Place herbs and spices on ground beef. Cook ground beef on medium heat. Once it's done remove the pan from the stove. Allow ground beef to drain and cool. Set aside.
Place chopped lettuce, tomatoes, shredded mozzarella, and avocado into a salad bowl. Mix salad ingredients well.
Top the salad mix with ground beef and sour cream.