In our modern lives we are not routinely in the practice of being 'mindful'. Instead we are often planning in our heads, thinking about our to-do list, worrying about all sorts of things, or dreaming about the future - none of these mean we are in the present moment! 

So adopting mindfulness in your life is not as simple as me telling you to "be more mindful", because you would find it difficult. Instead, we need ways to help practice mindfulness that allow us to develop the skill, so that gradually we will find it more natural to be mindful in our everyday life. You could imagine it like this: in the same way that lifting weights in specific ways in the gym will allow those specific muscle groups to get stronger, so that with time in your day to day life, anything that requires those muscles will seem easier, so practising mindfulness in dedicated practises that you choose to do, say, once a day, will increase your ability to be more naturally mindful.