A Talmid once asked Rav Chaim Shmuelevitz how to know Shas. Rav Chaim was shaken by the question.
He responded "וויסן ש"ס דארפסטו? קריינקעוין אויפן ש"ס דארפסטו" - "You want to know Shas? You have to get SICK over Shas."
Here and
here a shiur on how to taste the sweetness of life and of Torah.