Most people who do not listen really think that they do. Your challenge is to be sure that you are not guilty of the same sin when someone needs your attention. Little babies have high presence because their heads aren't yet cluttered with thoughts - they only know how to deal with what is right in front of them at the moment. This sounds too simple but look at what happens when you bring a newborn baby into a room. Everyone's attention shifts to the baby.
People start to smile and forget about their own problems for a few minutes.
This demonstrates the power presence has to make others feel more positive. Now it is unrealistic to think that you can always operate without distractions, but you can at least start to be aware of distracting thoughts when they start to clutter your mind. When your attention wanders, so will theirs. The good news is that simply becoming aware of the fact that you are distracted will start to put you back on track. When you notice that you are becoming distracted, just gently let go of whatever stray thoughts are in your head and bring your attention back to the task at hand.