What does "keep peace with" mean here? It is a little confusing to me.
The poet Max Ehrmann says, “Whatever your labors and aspirations, in the noisy confusion of life, keep peace with your soul.” My peace is only possible because of the love and support of Bill, Chelsea, Marc, Charlotte, Aidan, and our entire family.
Source: What Happened, by Hillary Rodham Clinton
I've looked for it on the internet and I could not find a satisfying answer. There was an answer which I thought it does not right for this sentence. The meaning was "Don't deviate from your principles" which did not seem right to me. Because this meaning does not fit the second sentence. Please help me to understand it.