Patience. Not all students learn the way you do. We have all encountered obstacles in life and in class that may affect our confidence, and this also applies to students we are trying to assist. We have to empathize with a student's situation, build confidence in the student, and emphasize on not quitting. In other words, the distance to the light at the end of the tunnel is shorter than they think. Have the student believe that you will not let them fail. Failing is not an option.