IQ being the biggest life changer.
Consciousness is considered second and more importantly is considered trainable.
https://en.wikipedia.org/wiki/Conscientiousness
It's part of the ‘Big Five’ factor of personality. https://en.wikipedia.org/wiki/Big_Five_personality_traits
It's interesting when Jordan Peterson was asked what he has been wrong about, he said he did not initially believe in the Big Five personality traits.
It fits with the hardware(IQ) and software(conscientiousness) analogy
IQ being the biggest life changer.
Consciousness is considered second and more importantly is considered trainable.