As a child, when I lost things such as my precious pocketknife, I learned that if I prayed hard enough, I could usually find it. I was always able to find the lost cows I was entrusted with. Sometimes I had to pray more than once, but my prayers always seemed to be answered.
Peace in this life is based upon faith and testimony. We can all find hope from our personal prayers and gain comfort from the scriptures. Priesthood blessings lift us and sustain us. Hope also comes from direct personal revelation, to which we are entitled if we are worthy.