Because psychotherapy may not provide the relief one seeks here are nofficial ways to not worry about what others say.
However, therapy cannot help with pressures tied to public evaluation. Some professions amplify evaluation signals continuously, particularly those connected to writing, acting, politics, public commentary. In such environments, the nervous system remains exposed to feedback loops of approval and criticism. Therapy cannot remove the structural condition. It can modify how the person processes the signal, especially how prediction errors are interpreted.
If you choose a career that hinges on public opinion, be prepared for the stress it brings. This is why many writers and actors struggle with anxiety; the pressure can be overwhelming, and often, no amount of therapy can alleviate it.