As with all of the greatest of things, it exists without form but with immeasurable function in a manner similar to love and compassion. Circumstance is a poor master. If something occurs that causes unrest or anger in our mind, we have a tendency to carry it with us long beyond the moment. While we are engaged in this we are unaware of new circumstances, bright moments, or our own commitment. When we learn to see, to really see, that we are the masters of our mind's direction then we can dismiss the unsettling delusions that try to control us.
Peace lives in all others.
If we fill ourselves with the monumental conceit that we alone can find our own Peace then we no longer have it. All minds are capable minds. All minds are independently dependent but not always aware. Our actions and interaction with and among others define us and influence others. If you are living in Peace then you do not have to preach it or prove it.