I've been eating a ketogenic diet for a couple of months now- it's not too dissimilar from a paleo diet. Very low carbs, no grains or legumes, little dairy and sugars, mostly veggies, eggs, and meat. It focuses on high fat though so you stay full and satisfied longer. It's been surprisingly easy to stay on- the one exception is I drink diet soda now, which isn't good in any way, but way better than the bottle of Coke or Mountain Dew I'd drink a day

Pork rinds are fair game, so they're my snack of choice,
I've lost 20lbs without exercise so far- my ideal weight is only about 5-10lbs less. Normally I run a lot so once that's going again it should be easy to get there and maintain.
One thing that's helpful when you don't feel like cooking meat and kale every meal is making a big pot of vegetable beef stew with a nice chunk of grass fed butter in it. It lasts a while in the fridge and is an easy, filling, quick meal when you don't feel like cooking. Gluten-free tamari is a good replacement condiment, along with grass fed butter and various coconut products (coconut butter is delicious).