It is sometimes difficult in our day and age for many to understand or appreciate how a young man could be called to the priesthood. It is a very special call to serve, and it also can be very difficult to resist. God always lets a person decide how to respond, but the call can be extraordinarily persistent. Take a look at this video from Paris, France. I think it might help. God calls and hopes we will respond with love, faith, and generosity of heart.