Learning from mistakes

Now I understand why some people plan for a week what they eat on each day... If you don't have time to go to a supermarket often, and then you buy in large quantities, it is very important to buy: 1) the right amount of quantity, and 2) the right combination of food (Yet a thrid concern is when the food are expensive, and you are living on a tight budget) so that you can consume all the food in a particular sequence before any of them becomes rot, and desirably also lead a balanced diet. The lessons I learnt over the days: 1) 2 out of 3 lemons were rot 2) 1-2 out of 10 mandarins were rot 3) 1/2 bottle of milk turned bad 4) Bought too much toasts, so that even if I had 4 slices/day, both for lunch and for dinner, I couldn't finish them before the expiry date.