From Pastor Scotty Smith, this is a prayer about God’s promises and his own trustworthiness. Climactically, because of Jesus, God is worthy to be believed and obeyed because of how sure his promises are.

Most trustworthy Father,
You haven’t promised us a stormless, hassle-free, disappointment-empty life.
You offer us no formulas for decreasing the probability of confusing things happening around us or disillusioning things happening to us.
But you have promised something that transcends the chaos and fear of uncertainty, the threat of doubt.
You’ve promised to keep us in perfect peace in the midst of whatever happens.
Thank you for being a Father who will never forget or abandon your children.
You will never ignore or neglect me. But your promise is even grander.
You’ve promised to keep us in perfect peace. Not semi-peace. Not partial-peace. Not wanna-be peace.
All we have to do is mine the riches of the gospel and keep in mind the wonders of your love.
All we have to do is to set our minds and affections on things above, for you are the Lord – the eternal Rock that is higher than us, the Rock of Refuge, the Rock of Ages.
Because the gospel is true, because Jesus is the Cornerstone, I will not despair when I am weak in concentration and focus.
I will not despair when I have a hard time controlling my thoughts and imagination.
Indeed, Father, you’re not calling us to trust in our ability to trust, but to trust in you and in your trustworthiness.
For you’ve even promised your children a peace that passes understanding.
What a God you are! You are so compassionate and generous!
There is no god like you, Father, no not one. How great are your mercies!
How profound your kindnesses!
How more-than-sufficient your grace.
In the name of Jesus – the Prince of Peace, the basis and bounty of all peace – Amen.