Final answer:
Vickie Stringer has high self-esteem primarily because of her positive self-image, which is central to self-esteem.
Step-by-step explanation:
Into her adulthood, we can recognize that Vickie Stringer, of the Chapter 4 vignette, has successfully developed high self-esteem because she has a positive self-image. Although having a successful career, a supportive family, and the ability to overcome challenges can all contribute to one's self-esteem, they do not necessarily ensure that an individual will feel good about themselves. High self-esteem is more about how individuals see and value themselves internally, rather than externally defined success or support.