That’s one way.
Second way is not to care what people think. Chofetz Chaim writes that in his sefer, Better a person be considered a fool one moment on this world, than an everlasting fool in the world to come.
An additional benefit of this approach is that once people get the hang of your new commitment, they’ll feel uncomfortable talking evil in your presence. They’d actually look up to you. You’d get a share in their shmiras hadibur!