The benefits of reaching an "optimal level of anxiety" were known 40 years ago. This is another restatement of common sense.

are we sure that competition - even positive competition - can be the best tool to discover our wonderful qualities?

Competition does not always have to be against others. One can compete against oneself to improve.

Also, the worriers who study will do better, so eventually they should develop the confidence that will help them evolve from worriers to warriors.

What role might epigenetics play in this? And what about whether parents & others in a child's early life are supportive or the opposite?

What about people who are like "warriors" but panic when the time comes and cannot follow through? Is that more related to possible childhood trauma?

I have had panic attacks -- and I mean really, really bad panic attacks -- since age 9. Yet I have never been nervous-- not a whit -- on a standardized test. A test seems like a challenge that I can tame; panic comes out of nowhere when I feel out of control, whether the lack of control is real or merely perceived.

I am really good at the skills required to do well on tests (not necessarily meaning that I'm smart; I just have good test skills). Might there be other factors, such as skills, determining whether a panic-prone person has a panic attack on a test?

Why does Mr. Bronson talk like he's addressing an audience of three year olds gathered around in a circle for story time? I can barely listen to him talk.

If some stress is beneficial, is "stage fright" -- which can be extremely debilitating -- out of control stress? And what about beta blockers for controlling extreme stress or anxiety?

Did the authors take into consideration the differences between Extroverts and Introverts when doing their research?

This book fails, if it doesn't bring up humility and bring down Narcissism, Hubris and the 'Winner take All' mentality.