As human beings we have the same experience of destructive and constructive emotions. We also have a human mind capable of developing wisdom. We all have the same Buddha nature.
Spirituality is a natural part of ourselves, as natural as emotions, but we've got all the language wrong and made this divide between secularism and spirituality, whereas instead it's about being human.
The elimination of the will altogether and the switching off of the emotions all and sundry, is tantamount to the elimination of reason: intellectual castration.
An investor will succeed by coupling good business judgment with an ability to insulate his thoughts and behavior from the super-contagious emotions that swirl about the marketplace.