I have found memorization, which used to be effortless, an increasing problem as I've gotten older.
I have to sing at a black tie gala event next Saturday. I've been dreading it. So about a month ago, I printed out all my words, laminated the sheet, and have been carrying it around with me every time I take the dog for a walk.
And I guess it worked! First rehearsal with the accompanist last night, and I didn't forget any of my lyrics!