Another vote here for dividing the packages and cooking half.  Get a small dietary scale, weigh the contents out at home, put in ziplock bags and label.  I do this for all packaged noodle and rice dishes, dry soup mixes, etc. as well as my cake mixes, pancake mix, etc.  Write any instructions and nutritional information on the bag with a sharpie.

Then you only cook what you will eat.  No leftovers.