With that in mind, my “songs” should be about love and not about how hard it is to be on the road. I should feel lucky that I, in my own small way, get to be on the road.
I think the critique he refers to was valid, but I also think that the best stuff comes when you “write what you know”; and when you write about what you are currently passionate about. When what you do changes, the things you are learning change along with them.
All interesting people evolve and grow. Asking them to always write about what we first liked from them is really asking them to limit what they can teach us.