You obviously aren't a newbie to fasting, so you already know the first 3 or so days are the hardest to get by.
On my last fast I too noticed that a good percentage of the advertisements on the TV were food related. Just about wore out my remote control avoiding them. LOL
One thing that some don't realize, the real benefit from fasting is the discipline of the mind. Every fast you do fortifies this discipline that you can use in other areas of your life.