Our brain has control in issues such as pain, heart palpitations, stomach problems, depression, anxiety, and much more. If we let them, the body symptoms can take over, like Bruce Banner turning into the Hulk. But by training those same nerves that tell our body to make our heart race to do other tasks, like breathing techniques or bio feedback, Bruce Banner (you) can stay in control.
Mindfulness is simply paying attention to life here and now with kindness and curiosity. Try it; close your eyes and just listen to the sounds around you. It helps depression, anxiety, and works wonders with kids who lose focus, get angry, or have difficulties at school.