the easiest one, imo, is just fasting, or more accurately, time-restricted eating. pick a 12-14 hour window that works for you and that's it.

for some if might be skipping breakfast, for others it might mean skipping dinner etc

it's way, way easier than having to worry about what to eat and honestly, we shouldn't be shoving food in our mouths and snacking all day anyway.

plus it's good for resetting insulin sensitivity and giving the digestive system a nice break