Self-Concept is not innate.
The experiences we have, the reflection of those experiences and others input about our experiences construct our self-concept. Self-esteem is how we feel about it positively or negatively.
As self-efficacy and self-esteem are both constructed by one's conscious reflections, it would appear that educators and parents should provide experiences that allow students to master relatively specific content and skills and have students consciously reflect on those successes.