No carbs is easy to do. It's how I've always lost my weight. Heck, back on my carbless diet again.
I will state, everytime I start the diet, it is HARD. The first few weeks IS withdraw symptoms for sure. Mental fog, random sweats, and massive cravings. I DREAM of stuffing my face full of so much carb laden food I wake up thinking I broke my diet. I feel sluggish, weak, and am pretty grumpy.
But after 2-3 weeks that finally goes away. I actually feel MUCH better after that time frame. Seriously so. When I'm eating carbs I am constantly having problems with my GERDS for example. I have a family history of stomach problems and several family members have died from it. I got the same problem. So like them all, I am prescribed acid reducers. When I skip one of my pills, trust me I feel it. The burning, pain, and ugh....
Anyhow, when I'm carbless it all goes away. Literally. I don't need to take my pills. I never get upset stomach or acid problems at all. After the first 2-3 weeks I don't have problems with energy, mental fog, lethargy, grumpiness, or cravings (well a spike for a craving hits every once in awhile if I smell something like baking bread).
So what do I eat? Meat, cheese, and veggies. Mostly meat and veggies. Non starchy vegetables though. Broccoli, brussel sprouts, spinach, lettuce, celery, avocados (lots of these), and the like. I'll make a meal out of steam brussel sprouts coated in butter and bacon. YUM! I stay away from sauces that have tons of carbs as well, but there are more carb free alternatives on the market now than there used to be.