Grit is a concept in education that is mentioned a lot these days. Grit is the characteristic that allows someone to stick with doing something hard. It is the resource that allows us to overcome obstacles. Grit means we do not give up easily. Rather, we stay with something until we are successful. Especially for children from difficult situations, grit is often the difference between being successful or unsuccessful.
Grit can also apply to prayer. It can be difficult to stick with prayer when it does not seem to be helpful. When we do not sense the presence of God, we can be tempted to give up. And yet for the saints, the ability to remain faithful to prayer even when it was not easy made the difference.