Not having the full Caleb's story makes it difficult to point out the key elements precisely. But if we assume it's a typical life - story, his beliefs and values would be crucial elements. They would have guided his actions and decisions. Also, any significant events in his life, for example, if he participated in an important competition or event that was life - changing for him. And the people who were there with him throughout his journey, supporting or opposing him, would also be key parts of his story.
Sorry, as I don't know the exact Caleb's story, I can't tell the key elements. But generally, key elements could be his main goals, like if he was aiming for a career in a specific field. Another could be the people he met who influenced him, such as a mentor.
Since I don't have the details of Caleb's story, it's hard to be certain. However, in most stories, a key element could be a turning point. For Caleb, this might have been a decision he made that completely changed the course of his life. It could also be a relationship, like a friendship or a romantic relationship that had a profound impact on him. Also, any challenges he faced, like financial problems or health issues, and how he coped with them would be important elements.