I don't have a problem with the music and chords. I can count on one hand the number of times I screwed up a song by forgetting the chords over my live gigging musical career.

Lyrics however, presented more of an issue. Not always but often at the most inopportune time.
I had a choice to stand there like a blithering idiot or fake it. I've often made up words on the spot.

Another thing I started doing, especially with songs that were new to the set list was to write a prompt. When I was in the house band we had the same audience practically every weekend so new and current hits were required. Often, we had the music together but not always the words. So I would write the first line of each verse as a prompt. Sometimes it was just a key word. That was often sufficient to remember the full verse. I'd write it on the set list sheet in large enough print to see it on the page.

Just because you have the music on a stand, whether it's sheet music or just lyric sheets, doesn't mean you have to read it. I have done that. I just put a large 1...2....3....CH .... Next to the verses so I can glance quickly and find the correct verse. I always sang and performed from the subconscious and only reference the written prompt when I needed it.

You can find my music at:
www.herbhartley.com
Add nothing that adds nothing to the music.
You can make excuses or you can make progress but not both.

The magic you are looking for is in the work you are avoiding.