Each one has to find his peace from within. And for peace to be real it must be unaffected by outside circumstances. – Mahatma Gandhi
This reminds me of something I heard in the past: real peace-of-mind is being unaffected by both the bad and good opinion of others.
So, cultivate and nurture a peace that is unaffected by circumstances.
And, cultivate and sustain a sense of self that is unaffected by what others think.
Only you can do it, and the benefits are immeasurable.