A Bible verse to memorize

I've heard my whole life that memorizing text (poetry, Bible verses, instructions, math solutions, etc. is good), and I wish I could, but I struggle with memorizing. But I've found a Bible verse that's easy to remember, and it's a theme that appears throughout the Bible in many ways and in parables, commands, stories, songs, and history. It fits any period of history and doesn't violate anyone's culture or ethnicity. Psalm 37:3 "Trust in the Lord and do good." It's the same in any translation. Then I'll work on the next part which contains the promise that follows the command, and it is a command.