To have a purpose is to have a goal to work towards. It is essentially something we ‘do’. To be mindful it is less about ‘doing’ and more about ‘being’. In a sense ‘doing’ is a more Western approach to life and ‘being’ is a more Eastern approach to life. Depending on where your cultural reference points are you might feel that these are polar opposites.
In fact they are intertwined. You cannot ‘do’ well unless you are present in the moment and you cannot ‘be’ in the moment without a purpose for doing so. They feed each other like Yin and Yang. To separate them would end up causing confusion and frustration and you would not be able to ‘do’ or ‘be’ particularly well.
To be purposeful mindfully or be mindful on purpose are not easy things to do, but once we recognise the interconnected nature of the two elements we can work towards it.