Most of the time, that's the only thing one needs to tell oneself.
When one sees something one doesn't like; hears words that irritate the wits out of one; is made to feel small, unimportant, inconsequential, unworthy - it's fine. Turn away, don't look. Sing a song, don't listen. Be reminded that the person making one feel unworthy is unworthy of one in the first place - unworthy to be angry with, unworthy to cry over.
So, it's fine...whatever gets thrown in one's face. It's fine.
Because living the rest of one's life in pain is simply not an option.