After a nasty encounter with an internet troll, I asked "Tannie" Google ('Auntie', because come on -- Google has GOT to be female!) for positive affirmations about not letting others affect you.
If you have a troll in you life, be it a masked madman on the internet, or even someone in your inner-circle that tests your patience and belittles your existence, go read this blog post by Jennifer Healey, entitled "Self-talk when you cannot control other people" (2021, February 16). She shares some lovely insights and really beautiful affirmations (including my favourite above!).