When changing ingredients in a meal, focus on maintaining balance and variety to ensure you are still getting all the necessary nutrients. You can look for healthier alternatives to high-fat or high-sugar ingredients, such as using Greek yogurt instead of sour cream or whole wheat flour instead of white flour. Experiment with herbs and spices to add flavor without extra salt or sugar. Remember to consider any dietary restrictions or allergies when swapping out ingredients. Gradually make changes to allow yourself to adjust to the new flavors and textures.