A protein carb combo slows down the digestion process and keeps insulin levels in check. You should cut down on carbs that are processed or have a high GI level.
If people told you to cut down on carbs, it was probably because you were eating too many and not enough protein.
It's like eating a bowl of cereal in the morning. You're hungry an hour or so later, right? It's because most cereals are all processed carbs. Your body burns through them quickly and you are hungry again.
But have a bowl of cereal with egg whites and you will be satisfied longer because your body slows down your digestion process. Eventually you can eat more, but take in less calories than you would just eating carb. meals.