On the day of the Last Judgment, we will fully reach our eternal destiny.
The primary happiness of Heaven consists in this: we shall possess, in body and soul, the infinitely perfect God and be possessed by Him. We will be personally and consciously united to God Himself, Who is infinite Goodness, Truth and Beauty. God’s love will fulfill every desire of the human heart. We will then experience a happiness which, once achieved, we will never lose.
At every moment of our lives, we should be prepared for death. We must use the time allotted to us by the will of God, whether it be long or short, with this preparation in mind. We must live Christian lives which are deserving of a heavenly reward. The eternal happiness of Heaven is worth this short life of sacrifice and pain. “For this slight momentary affliction is preparing for us an eternal weight of glory beyond all comparison” (2 Corinthians 4:17).