Common sources of healthy fats in the diet include avocados, nuts, seeds, and oily fish, such as salmon and mackerel. These fats are rich in monounsaturated and polyunsaturated fatty acids, which promote heart health and improve cholesterol levels. Additionally, sources like olive oil and flaxseeds are excellent choices for incorporating healthy fats into meals. It is essential to prioritize these fats over saturated fats and trans fats for a balanced diet that supports overall health and well-being.