A buddha, one who is awakened from the world of suffering, lives in peace. And a buddha remains in this world in service to humanity and the world. This is attainable in this lifetime, according to the teachings of those who have attained. If it is not attained, it is certainly worth striving for. But as soon as you are striving, peace is lost. Peace cannot be caught, or trapped. It is something to be received, like a swaddled baby in your arms.