In education and philosophy, “intellectual humility” is a quality that allows people to stop self-promoting their intellectual efforts and instead let their results (acquired knowledge, skills, etc.) speak for themselves. Perhaps, this concept could be expanded to any kind of effort, not necessarily an intellectual one, to help define humility in general.
For example, in art, and in particular, in photography one does not need to brag about the cost of equipment or the number of hours spent mastering the craft. Instead, we can just let the pictures stand on their own. With images, this should be particularly easy to do, since their transcend languages, cultures, and even time, because people are genetically programmed to heavily depend on visual input for much of the incoming information and emotional content.