Rinse the rice well.
Boil water in a saucepan.
Add rice and salt.
Cover and simmer 15 minutes.
Remove from heat.
Stir in lime juice and cilantro.
Heat oil in a skillet.
Add diced onion.
Cook until soft.
Add garlic and stir briefly.
Add ground beef.
Cook until browned fully.
Drain excess fat carefully.
Add chili powder and cumin.
Add paprika, salt, and pepper.
Stir well and cook 3 minutes.
Warm black beans and corn.
Prepare all toppings.
Spoon rice into bowls.
Add seasoned beef on top.
Add beans and corn.
Add tomatoes and lettuce.
Sprinkle cheese evenly.
Add sour cream and salsa.
Finish with avocado slices.