Mark Wilson says that people play at 70% of their skill level in competition compared to what they do in private practice. Not sure where he got the 70% from, but the conclusion is correct.
Well it is correct for Some People, not everyone. Some people carry that baggage. It's possible to overcome that sort of limiting attitude. Some can be satisfied with a 70% performance. It's much more rewarding when I can perform at 110%. Exceeding expectations starts with dropping expectations.
The fight or flight is something I can't create in practice. The deer in the headlights look is a Tell. The predator eyes tell nothing. So even when nervousness creeps in .....don't let it show.

Any sign of weakness strengthens the opposition. NEVER show displeasure with a missed shot. Efren is my role model. Period. When he misses he scratches his head and smiles or even chuckles.
Half the game is 85% mental.

When playing for money my goal was to make my opponent surrender. Making him quit was more important than the money. Of course there were times when I got down to my last barrel and the self to self always got around to, "Well I have been broke monetarily a few times and I survived. So uh ? The inner Alfred E Newman says, WHAT? ME Worry?" Some of my favorite comeback memories.

My observation and study of Cole playing one pocket for a thousand a game was entertaining and educational. Cole's game Never changed based on his money. His last barrel game was the same as his 25,000 ahead game. Perhaps better. Cole always showed up to play Harry with one barrel, or less. Figuring to get the full thousand required to play Harry with $20 nine ball the night before. I never saw Cole seek a backer. I did see him go broke a time or few. It wasn't the pressure that changed his game it was the alcohol. Alcoholism is a disease that's incredibly hard to cure. Cole tried the wagon many times but always fell off. His confession to me was, "I just need one drink to take the edge off." The nerves solution worked at first but Cole couldn't stop at just one.The big 2 day event that I performed my best in had me starting Sunday morning with 3 drinks at my table when my first match started. A beer a cup of coffee and a glass of water. The beer and coffee got a sip or two depending on how my mind felt. The water quickly became my go to and the other two were not finished. The method took me to the finals.

worked for me.