Mindfulness is the art of observing your flow of thoughts and sensations without reacting to them.
In my observations this state of standback mindfulness is readily entered when you intentionally see beauty. Take time to notice beauty in your surroundings and as you do this notice where your attention is. For me my attention moves out of my head and centers in my heart.
Mindfulness can be likened to being in the state of not doing, or unconditionality, or being neutral, or dropping down in that you are aware of what is happening but you do not take positions of judgement or analyze what is going on.
So, if you wat to enter the state of mindfulness or if you want to drop down into heart awareness see beauty. Refer to the previous post concerning the Navajo chant, beauty all around me.