Healthy nutrition is a very complicated subject. At least, it is if you believe everything that dieticians and nutritionists would have you believe.
Really, it's not difficult at all. What makes it difficult is an attempt to make our modern, 21st century western diet fit into some sort of healthy template.
Once you come to understand the shenanigans and vested interests that have contributed to the way we eat today, you have the opportunity to simplify your nutrition plan and focus on what really gets results.