When Will I Learn?

Twenty-five years of living in the United States has handicapped me in the area of buying food and the food keeping for longer than two days. Around 3:30 today I was a little hungry so I opened some Oatmeal cookies and went to pour a glass of milk. Lo and behold, the milk was already ruined. I just bought the milk two days ago. One day after I buy strawberry's there was mold. I buy some cheese and when I opened it...mold. I have been living here for over a year and one would think I would learn to buy less food and go to the store more often. I do not like going more often. I like buying food for a week, eating it, and then going to buy more food. However, that is something you just can not do in El Salvador.