I think David and the other writers of Psalms wrote as a reaction to what was going on in their life. Even though my list is very subjective (and not complete) it has helped me to locate psalms with other scriptures. I had to save this as a picture because of how I typed it many years ago, so please click here to view my list, I hope it will be a blessing and a help in your Bible studies.  psalm position  This is also in David the Writer.