I live by keto eating, I prefer not to call it a 'keto diet' because of the general association between the word 'diet' and the act of limiting the size or calorie content of meals.
I eat as much as I like / to satiation. I don't eat my first meal of the day until after 12 noon and more usually sometime between 1pm and 3pm, depending what I'm busy with. The late start to eating isn't a problem because our blood sugar levels are low in the mornings, and as blood sugar drives hunger by making the sugar into fat and also stopping you from getting at your fat reserves, it makes you hungry.
It's just soo easy to not eat at the start of the day and I tend to eat more for the pleasure than pronounced need as my system is now fully converted to using my fat as fuel - as per our design.
My particular pleasure is 'high fat, medium protein, low carb' (HFMPLC) Which sounds complicated but is actually very easy to live with provided that you prepare your own food.
I eat 3 dozen eggs a week, use full fat milk all the time and add double cream to tea or coffee. I buy organic meat and always eat every scrap of fat.
Whenever I can be bothered to weigh myself I clock in at around a steady 10 stone 10.
In my previous life I though I was eating healthy food but I didn't understand that our diets are driven by money - thus the cereal industry funds the British Heart Foundation and the BHF says that cereals are good for your heart. Which is simply not true, as I now know, but it sounded ok as it slotted right in to the nutricial advice given by our own government (copied from the USA's nutritional policies - and look at those fatties). My weight was anywhere between 12 stone 7 and 13 stone 7 and running marathons and exercising like a duracel rabbit wouldn't shift it!
In fact, when living on the HFMPLC food it's recommended that you don't weigh yourself as your waist measurement is a more appropriate guide to how you're doing as when you start to function as a fat fueled creature your fat just seems to disappear. I was tucked tightly into 34" waist trousers for most of my life and I'm a regular 28" waist now.
For most of my life I avoided eating fat as much as possible, I ate lots of fruit, lots of wholemeal bread, lots of cereal (all high carb) and I exercised like a mad man but was always hungry.
I just didn't understand that mankind ate very few carbs until quite recently as natural fruits and cereals were much smaller before they were developed for cropping and only available in the autumn - just when people needed to put on some fat as fuel for the winter.
Nowadays fruit & cerials are universally available all year round so society gets fatter and the rates of diabetes, heart disease and the many other carb related illnesses are going through the roof.
I'm not going to preach on about it, as you can find plenty of good information online, but I do urge that you think about what the Eskimo's ate. It was mostly seal blubber (easier to digest in an environment where theres no wood to burn to cook food) but also some oily fish and occassional sparse greens (litchen and small plants during a brief summer window if they were in the right places).
So they ate raw fat and meat and never ate cereal or fruit of any kind but they were incredibly fit people. You never saw an overweight Eskimo and they lived long lives in extreme conditions.