This is pretty much the same as keeping a food journal. For some reason, writing down everything you eat sounds crazy however this is the best way to monitor your food and drink intake. At the end of the day, you can detect if you are eating too much. Overeating during the holidays is pretty much normal because delicious food are everywhere. With this activity, you can be able to track everything. You will need a small notepad and a pen. Make sure that they will fit your bag so it will be with you all the time.