I would like for you to indulge me a bit on a little exercise I would like to lead you through. It will only take a couple of minutes of your valuable time. Having a timer with alarm may help but is not essential.
At the end of reading this paragraph, I would like you to close your eyes for a minute or two and try to pay attention to all of your remaining senses. What do you smell? What to you hear? Touch? Taste? Try to pick out each detail of every noise you hear. Listen to your breath. Can you feel your heartbeat? Can you hear it even? Spend a minute or two in quiet and full attention to everything going on around you. Then open your eyes.
Now, while you stare at your computer screen all day paying attention to other things, at least you will know part of what you are missing.