If you can stick to a “balanced diet” and generally eat 3 meals comprising of high quality protein in sensible amounts
(100gram of meat/fish or say 500ml of milk or 500g yoghurt, or 100g of cheese or 4 whole eggs (Poultry, Fish, Redmeat, Dairy and Eggs)
With Complex Carbohydrates like Wholegrains, Legumes or Sweet Potatoes, again in sensible amounts like 100gram)
Supplemented with Fruit or Vegetables (Blueberries, Avocado, Mango, Figs, Apricots, Spinach, Rocket, Carrot, Pineapple, Garlic, Onions, Tomatoes, Peppers, Green Peas, are the most nutrient dense I can think of)
Then a balanced profile of fats (Saturated from whole food like meat or dairy, Monounsaturated from Olive Oil or Avocado, and then sensible Polyunsaturated fats, from either Oily fish, or whole food nuts)
I advocate for trying to not cook in oils or fats that are not Highly Oxidised, layman terms being they don’t degrade from heat. Avocado Oil is the winner here imo but try use this sparingly, if you eat plenty of meat or fatty fish, whole dairy, nuts, eggs, etc you will get plenty of good fat, and you only need some monounsaturated fat and polyunsaturated to balance out,
Polyunsaturated fats are misunderstood, they are only “bad” due to overconsumption and heating them. 10-20 grams a day is usually good with about 1-3grams of Omega 3.
Lastly you want to try use things like nuts, high quality cocoa, spices etc as little top ups for antioxidants and benefits, but in small amounts, especially nuts as they are so calorie dense.
You can use chronometer as a reference, if you input each Individual whole food in its amounts, it’s the best free tool to get an estimate of where your at but blood work is king.
Failing that, try to include the food I mention, plug in a week average across the board to see what your low in.
Common offenders are
Omega 3
Magnesium
Vitamin A
Vitamin E
Vitamin D
Vitamin K
Thiamine
Maybe more?
I won’t write all here, but you then need to top up with supplements, and happy to provide more detail, as you need to be very observant to what you buy so it will actually work as it’s a money making market at the end of the day.
I eat as well as I can, but I don’t force myself to be perfect, I take supplements to buy myself time back, and eat more well when I have time.
Yes I could do more but I’ve made my choices. I’ve been working 50 hour weeks across the month and I’m not whipping myself for getting easy choices and falling on back ups. When I go back to 28 hours a week, I will be back to having a whole food breakfast and dinner.
Hope something I’ve dribbled helps.