What "hard work" really consists of in the modern world is an interesting question. It is usually not hard physical labor these days. But great capacity to endure boredom has to be up there with what it takes to be a hard worker today. Can't let the attention wander to more interesting things. Some get so desperate they take drugs for this (mostly prescriptions). Combined with willingness to give up more hours of your life to such work than the average, with the hope it will pay off someday.

