I've come to the conclusion that Conqueror's Haki works through one having true faith in themselves, and truly believing themselves to be better than others. This means that people can express Conqueror's Haki through certain circumstance, or can come to develop the ability to use it as they gain more confidence.
Every character shown using Conqueror's Haki are those with few or no insecurities, and a high level of confidence, even if not displayed directly. The only case of this that may be contested is Katakuri, who was insecure of his mouth. But it was also stated that he began to doubt his own legend throughout his fight with Luffy, implying that he may have to some extent previously believed himself to be a truly perfect being. Every other user has extreme confidence in their abilities, which may be the reason that they are able to use it in the first place.
It could also be that the simple idea of attaining a goal allows someone to use the Haki, and it just depends on how deeply someone want's to achieve their dream that dictates how strongly they can utilize the ability. For example, White beard had the lifelong goal of building a family, and this single minded goal allowed him to use Conqurerors.
Along with this, it would explain the many times that Zoro is assumed to be the leader of the straw hat pirates, but it is notable that most of his Conqueror-like feats and misjudgments occur only while he is wielding his swords, meaning he may later have the limitation that he can only use his newly-developed Conqueror Haki while wielding three swords, else wise he doesn't have the mental strength to use such an ability.
This is just a rough outline of my thoughts, lemme know what you think!
Every character shown using Conqueror's Haki are those with few or no insecurities, and a high level of confidence, even if not displayed directly. The only case of this that may be contested is Katakuri, who was insecure of his mouth. But it was also stated that he began to doubt his own legend throughout his fight with Luffy, implying that he may have to some extent previously believed himself to be a truly perfect being. Every other user has extreme confidence in their abilities, which may be the reason that they are able to use it in the first place.
It could also be that the simple idea of attaining a goal allows someone to use the Haki, and it just depends on how deeply someone want's to achieve their dream that dictates how strongly they can utilize the ability. For example, White beard had the lifelong goal of building a family, and this single minded goal allowed him to use Conqurerors.
Along with this, it would explain the many times that Zoro is assumed to be the leader of the straw hat pirates, but it is notable that most of his Conqueror-like feats and misjudgments occur only while he is wielding his swords, meaning he may later have the limitation that he can only use his newly-developed Conqueror Haki while wielding three swords, else wise he doesn't have the mental strength to use such an ability.
This is just a rough outline of my thoughts, lemme know what you think!