Over the years, I have spoken with individuals that were disappointed with God. They felt that He was not answering their prayers. In essence, their prayer requests revolved around wanting God to remove certain problems and difficulties in their lives. I have observed the way that God works through the pages of His Word, the Bible. I noticed that God doesn't usually remove problems and stress issues that are inherent on this fallen earth. What I have seen God do is change people, not problems. Stress and difficulties are unavoidable. However, Isaiah 26:3 tells me that I can experience perfect peace when I put my trust in Him, not circumstances. "You will keep in perfect peace him whose mind is steadfast, because he trusts you."
Peace is not a physical place. Peace is an attitude. Peace is a mindset. Peace is a belief. Peace based on my surroundings will come up short every time. Peace connected to the unchanging nature and power of Almighty God is guaranteed to those who truly trust in Him. Peace with God is a gift. The peace of God is conditional. God's perfect peace is reserved for those who see past life circumstances and "Whose mind is steadfast, because he trusts in you."