Mexican Chicken Soup (Caldo De Pollo)

Name: Mexican Chicken Soup (Caldo De Pollo)
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: Mexican
Ingredients: 1 tbsp Olive oil; 1 medium Onion ((diced; ~1 cup)); 1 medium Carrot ((peeled and diced; ~1/2 cup)); 2 stalks Celery ((chopped; ~1/2 cup)); 1/2 large Bell pepper ((diced; ~1/2 cup)); 2 cloves Garlic ((minced)); 6 cups Chicken broth, reduced sodium; 1 14.5-oz can Diced tomatoes ((with liquid)); 1 lb Boneless skinless chicken breasts; 1 tsp Cumin; 3/4 tsp Sea salt ((to taste)); 1/2 tsp Black pepper ((to taste)); 1/4 cup Fresh cilantro ((optional; chopped)); 1 medium Avocado ((sliced)); 6 tbsp Sour cream; Lime wedges; Fresh cilantro