Well, carbs aren't actually proven as being necessary for nutrition. Vits and minerals are, of course. So we need them. But we don't need the starchy carbs that come in root veg and grains. So you can safely cut them out completely, and still get full nutrition by eating veg, fats and proteins.
Of course, not everyone needs to cut them out completely (your meter will tell you if you need to do that
So I would say cut down on the carbs til your meter and your body are happy, and fill the rest of the plate with more veg, meat, fish, eggs, cheese and other low carb dairy.
If you have a look through this thread, you will see that we have all found ways to keep the carbs low, while eating lots of different and flavoursome foods. @Rachox has a fab porridge replacement recipe. If I eat breakfast it is usually either coffee and cream or eggs and bacon, but there are low carb mueslis out there, and recipes if you want to make your own.