What does she mean by this

I believe she means that there are a lot of jobs in the world that people just don't want. Atticus takes on Tom's defense because it's the right thing. It will be a difficult job, but he is the only one willing to do it, as well as making sure it's done the right way. People often avoid doing the right thing because it's too difficult. Thus, we have to embrace those who go the extra mile and be proud of them.