Catechism of the Catholic Church §2549 — excerpt
It remains for the holy people to struggle, with grace from on high, to obtain the good things God promises. In order to possess and contemplate God, Christ's faithful mortify their cravings and, with the grace of God, prevail over the seductions of pleasure and power.
This translation is under copyright, so only the cited words are quoted here. Follow the link for the full text. Translation: English translation of the Catechism of the Catholic Church, 2nd ed. (Libreria Editrice Vaticana), as posted at vatican.va.