You live all of your life inside your own head.
You experience the outside world via FIVE senses.
Sight, sound, touch, taste and smell. As your brain receives data from these 5 sources it will process the data and give it meaning.
We then use words to describe and help us understand this data. If we use the right words it can help us perform better. If we use the wrong words (inside our head) it can get in the way of our performance.
Stress is MINDMADE. Not because of the outside world, but because of our THOUGHTS about the outside world.
Change your thoughts and process the data differently and your whole life will change.