What's more difficult for you emotionally:
To play new music or pieces that you already love?
For most people, they would prefer playing organ music they're sure are going to like. That's not new music. Because with new music, you can't be sure. There are no guarantees.
But what's actually more satisfying:
To have played through the piece you have never played before or one of your favorites?
It turns out, when you think deeply about it, most people would get more satisfaction from the new thing. The one they were more afraid of trying out.
Only this way you can get out of your comfort zone and grow.