A while ago I was impressed to hear that someone in our church was committing Psalm 119 to memory. I have for a while been challenged about the task of getting the word into my soul through committing selected passages to memory. This is no easy task.
1 v 8 when the Lord says to this great leader- get the word into your bones- and do this all day and night. Quite an ask you might say with all the other things he had ahead.
Having watched this (which has really stuck with me) I was thinking through what my cluster of texts might be. Piper suggests Psalm 23, 46, and 1. Also Romans 8 and 2 Cor 5 v 21.
Here is some more help that you may want to take some time to read of listen to.
Why memorise scripture?
How do you memorise scripture?
Also, Peterson's chapter on the Lectio Divina is excellent in Eat this Book.
Why not get 2 Cor 5 v 21 into the hard drive of your brain today as a starter for one.