"The pre- and post-stages of the limbic-to-prefrontal-cortex
shift in power are neither bad nor good; each has powers suited to a
different stage in life. In your twenties, when you’re making
big, important moves and decisions, you need emotion and intensity to spur you to study and ponder life’s big questions, and the strong
motivation to take risks, venture out, and make commitments. Then, in your thirties and beyond, you need confident steadiness to overcome your counterproductive impulses."