The activity that helps Francie avoid telling lies is focusing on having integrity, focus on his or her belief in karma and that activity is called mindfulness. I hope you are satisfied with my answer and feel free to ask for more if you have question and clarifications
You can also write: Writing stories in an outlet is what helps Francie avoid telling lies. As stated in lines 143-145, "What was important was that the attempt to write stories kept her straight on the dividing line between truth and fiction." This is all thanks to her teacher's advice.
