firmness of purpose(n = noun.attribute) firmness, resoluteness, resolution, resolve - the trait of being resolute; "his resoluteness carried him through the battle"; "it was his unshakeable resolution to finish the work"
is a kind of trait
has particulars: possession, self-command, self-control, self-possession, self-will, will power, willpower, steadiness, sturdiness, stiffness, bullheadedness, obstinacy, obstinance, pigheadedness, self-will, stubbornness, single-mindedness, adamance, obduracy, unyieldingness, decision, decisiveness, determination, purpose, steadfastness