Students really understand this metaphor when compared to others who are "fishing" for a reaction. After I read the story to the students, we go back through the story and compare it to what others do to make you angry. The "bait" they use is mean words. And even if you ignore those mean words the first time, the people will come back and add more "bait". It may take several times of ignoring the "bait" before the people move on to a new fishing hole.
I use a Smart Board to illustrate The Story of the Smart Fish and ways to ignore the bait and avoid the danger of getting angry. 1) Become a brick wall, students can push you, but if you act like a brick wall, and do not budge, they will not get what they want. 2) Remember that it takes two to play, if you don't join in, they will move on. 3) Remember the truth, good feelings will protect you.
To culminate our group lesson, we made "Smart Fish" from old computer CD's. (Our computer teacher had a stack of CD's of an older program that she was no longer using. So she upcycled them to me so I can use them for instances such as this.) I printed the strategies to ignore on a CD label and glued them on to the CD. Students then decorated their Smart Fish with fins, sequins, and markers