Leon, Olivia, and Angelica

Following her breakup with her fiance Prince Julius after he was seduced by fellow Marie Fou Lafan, Angie Rapha Redgrave wonders aloud if she should try to get some kind of revenge on Marie. To their friend Livia's consternation, protagonist Leon Fou Bartfort agrees—and then explains that the best kind of revenge is to make yourself happy. In his view, directly taking revenge against somebody is too much work for little real gain, whereas this way your adversary will see you being happy despite them and it'll make them miserable.

Example of:
Success as Revenge