How would you describe Salva’s character traits in chapter 17 of a long walk to water

Salva demonstrates the strength of his character when he decides to form his nonprofit, Water for South Sudan. He could have remained in a comfortable existence in America, going to college and getting a job and making money, and that would have been understandable, given the difficulties of his early life. But instead, Salva decides to persevere to bring water to Sudan. There are “a million problems to be solved” (107) and “it was much more work than he imagined” (108). Weeks turn into months and into years. Salva has to face one of his biggest fears to fundraise—speaking in front of an audience. He “knows that his English was still not very good. What if he made mistakes in pronunciation? What if the audience couldn’t understand him?” (108.) Salva doesn’t let these fears deter him, and when he sees the children he remembers what is at stake.