Its not what happens in others life's its standing on what God said. "You will keep him in perfect peace, Whose mind is stayed on You, Because he trusts in You." See the word "trust". Same with "Delight yourself in the LORD, And He will give you the desires and petitions of your heart. Commit your way to the LORD, Trust also in Him, And He shall bring it to pass." Again the word "trust". Faith.
There is no "I don't have, He doesn't do it" so forth so on. God can not lie. We don't walk by how we feel but faith. Peace.. I have the peace that surpasses all understanding will guard my hearts and minds in Christ Jesus. The verse before that one I just typed says "The Lord is Near! Do not be anxious about anything. Instead, in every situation with prayer and petition with thanksgiving, tell your requests to God. And the peace that surpasses all understanding will guard your hearts and minds in Christ Jesus.”
Christ said AMP "Peace I leave with you; My [perfect] peace I give to you; not as the world gives do I give to you. Do not let your heart be troubled, nor let it be afraid. [Let My perfect peace calm you in every circumstance and give you courage and strength for every challenge.]"
See this is what God said and if He said it He has to do it since He can no lie and HIs word can not come back to Him void. It has to do what He said. If we wait on the lord "but they who wait for the LORD shall renew their strength; they shall mount up with wings like eagles; they shall run and not be weary; they shall walk and not faint." Another promise. For me I don't care if its a hour a day a week a month I do not stop. I don't care what is happening around me or with others for that is not How God works. You stand on what He said no matter what happens what comes nor how dark it gets you stand on His word. What we do think say watch read also comes into play here. We get alone we read the word pray sing praises to Him no matter how we "feel".
Don't let doubt come in. If you get some thought about no peace, He won't do it, He does not care.. you speak what He said.. NO God said if I will keep my mind on Him He will keep me in prefect peace. Say you get scared.. NO God has not given me the spirit of fear but of power love and a sound mind. Hello FAITH! There is no maybe here.. IT WILL HAPPEN!