One of the most essential skills we can learn in this lifetime is to be aware of what is happening in our own mind.  We have somewhere between 10 – 70,000 thoughts a day and most of them happen out of our awareness.  The most valuable thing you can do in this day and age is to get a handle on what is happening inside this head of ours to be able to productively direct our own attention.  We often can’t change our environment, but we can absolutely learn the fundamental skills to master internal landscapes which in turn vastly affects our physical health.