What is The Jagged Graph?

Dr. Sarah shows Audrey a line graph that forms many jags since it has a number of ups and downs. Dr. Sarah explains that this graph shows recovery -- some days are better than others, but there is always another spike upwards. Audrey is anxious to be cured and wants her graph to skip the jags and just go straight up. She stops taking her medication and tries hard to stay positive and upbeat, and on path for upward movement without any setbacks.