IME a good ratio of carbs:protein:fat to aim for is 30:30:40. This wont put you in ketosis but gives you more flexibility to eat some carbs and is sustainable. keep this within a slightly lower calorie limit than your TDEE and you will lose weight. So, an alternative approach to LCD or full on low-carb, you can choose which suits you best.
You can log on myfitnesspal to get a pretty good guide to how close you are to hitting your target ratios/amounts, although just so you are aware, I think it's not always massively accurate in this respect..the focus is on calories, sometimes things which obviously have protein show as having none
. Pretty good as a tool though.
As other have said, choose complex carbs, not white/beige processed ones and make sure you have appropriate portions, not the enormous platefuls that have become normal.
Maximise veg. A small amount of fruit. Eat good fat rather than trans-fats etc, so avocados, olive oil, nuts, dairy, oily fish.
Avoid sugar and also sweeteners - recently it has been shown that insulin receptors respond the same way to sweeteners as they do to sugar, not to mention all the other horrible things they can do to your health. So, as 1919 said, no more low cal hot choc or cereal bars sorry 