Grit is a buzzword in education right now. Grit is all about encouraging hard work. Here's a decent article that explains why it's a useful tool to have in your toolbox: Does Teaching Kids to get Gritty Help Them Get Ahead?
Take a moment to read what Sal Khan, creator of Khan Academy, has to say about the way we learn and the importance of valuing hard work and perseverance. Why I Will Never Tell My Son He's Smart by Sal Khan