I played a dance last night. I sounded terrible. The whole band sounded terrible. I was embarrassed.
Dancers came up and told me how wonderful we sounded. Dancers told me how wonderful I sounded. The callers told us how happy they were we were playing. The guitar player was particularly pleased.
I've had just the opposite experience, too. I've had nights when I felt like we were hot as can be, and we didn't get a single shout or scream from the crowd.
Go figure.
I've learned to just keep showing up.