I am never really hungry....

I agree with listening to your body as for me if I am not hungry if I try to eat or sometimes tell myself I should eat breakfast I get nauseated.
So I agree that listening to your body is the most important information.
However my issue is my body is never really hungry... for the most part I eat when I say to myself hey you haven't eaten all day and it's now 2/3 pm! Then I try to get a snack in me.
For the most part my day starts at 615 am, I get in the car with a can of Pepsi at 7am, at work from 8am - 4pm, throw out the Pepsi I still have open another one around 1 pm, leave work at 4 pm throwing out the can of Pepsi on my way, arriving home at 5 pm, eat supper around 6 pm which is usually meat, veggies with a Pepsi and then maybe a small snack 5-10 crackers, two bite brownie or a cheese string with a Pepsi. That's about it! So most cans of Pepsi are thrown out half full so that would make a total of 2 cans per day.

So my concern is why am I not hungry when I know my body is lacking energy as I am exhausted always!