The hardest thing to start and maintain is a diet. The first thing your body looks for is an energy source. Sugar in any form is hard as hell to give up but if your'e serious about health that is the starting point. Carbs are the next easiest source because they convert to glucose very quickly. Potatoes, bread and pasta are also hard to give up. At one time I gave it all up and became a vegan only to find I was becoming malnourished. My teeth and energy levels suffered. I lost weight but wasn't very healthy. Your body needs a source of energy and vegetables just don't cut it. I still eat vegetables but am very picky which ones because of natural oxalates that build up in your system. I began a carnivore journey and lost 20 lbs in one month. Your microbiome flips and your body converts animal fat to that energy your body needs. Your brain is made of 60% cholesterol so animal fats are very important. When you have inflammation anywhere in your body your brain sends cholesterol as a repair mechanism. It shouldn't be used as a marker for heart disease. inflammation however should be used. I avoid all foods that cause inflammation. I stay away from seed oils like the plague because of the inflammation factor. I only use ghee, beef tallow or butter for frying. If you feel you need olive oil for a salad it should be pure which may or may not be hard to find. All processed grains in cereals and breads could be tested for herbicides and pesticides and be found positive. glyphosate and atrazine are used which can wreak havoc on your hormones and microbiome. Eat only organic and check sources. Seems like a lot of trouble but health and well being is worth it.