I have tried prayer lists, but they seemed worthless in times of distress. I have tried concentrating on prayer, but that was impossible at the most difficult times of life. I have tried conversations with God, but I am horrible at conversations, and my conversation with God seemed unidirectional.
I have found the simple prayer is best. For many months, the only prayer I could say was from Proverbs 3:5-6
“Trust in the LORD with all thine heart; and lean not unto thine own understanding. In all thy ways acknowledge him, and he shall direct thy paths.”
Although not written as a prayer, it became my prayer as I admitted my own need for help in trusting God. Every moment of every day, this was the only prayer of my heart.