I write out the passages I am memorizing long hand on 3X5 note cards. Then I take a walk [about 30 minutes] to go over the verses repeatedly. After about a half hour, I return to my study desk for more.
Late each afternoon I have taken 2-hour walks during which time I take the note cards of that day to go over the verses. To get verses solidified in the mind and heart takes persistence. You can memorize about 2 verses a week, if you work at it. But it’s good to have long periods of memorization, too. These long periods are very enriching but tiring.
I am in full agreement with the Psalmist who said, "I have hidden your word in my heart that I might not sin against you."