Fear of the unknown takes us out of our comfort zone. When fear sets in, we start to panic and make rash decisions to try to control the situation and this is when things can spiral out of control.
Competition is tough. Play like you practice. That is tough. They are demanding on our mind, efforts, and mindset. These pressures require mental skills and a special way of thinking.
One minute ignorance is bliss - you are free to run around and have fun and the next minute you seem to be aware of everything and are no longer as free.