The quote describes a person who holds a strong belief in their own capabilities, convinced that they are the only one capable of performing a task to a satisfactory level. This mindset can lead to feelings of frustration and isolation, as the individual often finds themselves lacking support from others.

In the context of "The Witches: Salem, 1692" by Stacy Schiff, this behavior highlights a significant theme of individualism and its consequences. The character’s unwillingness to rely on others not only reveals their insecurities but also sets the stage for various conflicts that arise from their self-imposed solitude.