Work out, increase water consumption to 80 oz.
A day, break your meals down into no less than 4 (so you keep your energy up and don't bombard your body with too much in one shot), increase your activity level, restrict your sugar and carb intake and be mindful of your portions.
A carb should be no larger than your clenched fist and a protein should be no larger than the palm of your hand.
Make your carbs and proteins the side dishes and vegetables and some fruits the main affair.