Isaiah 26:3 NKJV “You will keep him in perfect peace, Whose mind is stayed on You, Because he trusts in You.”
As Christians, our sense of peace and stability should not depend on our outside circumstances but on our inwards thoughts. If we focus our thoughts on the things of this world system, we will be depressed because the things of this world system are depressing. But if we think on the positive things of God, put our minds on heavenly things, and think about what God has given us, we are going to be blessed. It all depends where we put our minds. If we really had our minds stayed on the awesome things God has done for us and prepared for us, it would be impossible for us to be depressed and defeated, regardless of our challenging situation. There would be perfect peace. When we are in the middle of negative circumstances we can think of things that are of good report (Philippians 4:8). And as we think on those things, we will experience emotional peace and joy. We will find our peace in who we are in Christ and what He has done for us, not in our physical circumstances. Then you can have a good day no matter how bad people treat you, because your inner peace will put your emotions under control!