If I understand correctly, ketogenic diets tend to be easier to follow because you're less hungry. This squares up pretty well with my observations of my current high-fat diet.

I should chemically test whether or not I'm in ketosis though, I remember a haze, but I had assumed that it was the results of travelling, drinking, and barely sleeping (two days of bussing + ferry through the Balkans, drinking and staying up late at a wedding (and taking notes on the experience), then a sleep-free transatlantic flight before a car trip from Maryland to North Carolina...) Lots of confounding variables there.