For you nut-jobs on "no-carb" diets. Only if you're dieting for competition purposes should you ever go no carb, and even then, you still consume carbs (it's about the QUALITY of the carb.. Silly poo-heads)
How do we tune in and start hearing God's voice? We learn God's voice by reading the Bible, memorizing and meditating on it. When God speaks to us it will usually be through His Word, and it will never go against what it says in the Bible. The more we learn about God's Word the more we learn to hear His voice.