One last tip: Initial weight loss will be sudden, but it slows down a lot. Many people, including my wife and I, lost centimetres but the scale never budged. Eventually the scale catches up as the body dumps the water which replaced the lost fat in the fat cells - called Whoosh effect.
LCHF needs to become a lifestyle and not just a diet. When low carbers go back to their old ways the weight comes piling back on very quickly - I have been there.
I am a LCHF'er for life now. I will NEVER go back to how I used to pig out on take aways and pies. Now, the food is so good and I am so satisfied after normal meals, biltong in the cupboard goes mouldy before I get a chance to snack! There really is no urge to eat junk and sweets... although the occasional dark chocolate is allowed.