Do you ever find yourself rewinding the movie you're watching over and over again? Do you have to read the same paragraph multiple times? Most people are unmindful several times a day; simply being unaware of their surroundings or what's going on. Practicing mindfulness improves both your mental and physical health.
When you start to observe how the mind works, you will laugh at the impossibility of clearing your mind of thoughts. It just isn't going to happen! Having thoughts is part of being human. Some researchers say that we have around 50,000 thoughts a day (National Science Foundation) and that around 95 per cent of these thoughts are the same as you had the day before.
I liken 'Mindfulness' similar to any other new activity or skill we wish to master and bring into our life. In other words just as an instrument will not learn itself, needs practise and dedication, so does a change in our thought process. In whatever way we wish to enhance our life and well being, we have to put in the effort.