Remember - Christian Joy does not per se always involve emotions…it goes deeper.
"“Gaudete in Domino semper”, St Paul wrote: “Rejoice in the Lord always” (Phil 4:4). True joy is not a fruit of “divertirsi” [having a good time] understood in the etymological sense of the word di-vertere (di-version), that is, shirking the commitments of life and one’s responsibilities.
True joy is linked to something deeper. Of course, in the all too often frenetic pace of daily life it is important to find time for rest and relaxation, but true joy is linked to our relationship with God. Those who have encountered Christ in their own lives feel a serenity and joy in their hearts that no one and no situation can take from them. St Augustine understood this very well; in his quest for truth, peace and joy, after seeking them in vain in many things he concluded with his famous words: “and our heart is restless until it rests in God” (cf. Confessions, I, 1, 1).
True joy is not merely a passing state of mind or something that can be achieved with the person’s own effort; rather it is a gift, born from the encounter with the living Person of Jesus and, making room within ourselves, from welcoming the Holy Spirit who guides our lives. It is the invitation of the Apostle Paul who says: “May the God of peace himself sanctify you wholly; and may your spirit and soul and body be kept sound and blameless at the coming of our Lord Jesus Christ (1 Thess 5:23)."
~ Pope Benedict XVI
“Christian joy thus springs from this certainty: God is close, he is with me, he is with us, in joy and in sorrow, in sickness and in health, as a friend and faithful spouse. And this joy endures, even in trials, in suffering itself. It does not remain only on the surface; it dwells in the depths of the person who entrusts himself to God and trusts in him.”
~ Pope Benedict XVI
“I realize of course that joy is not expressed the same way at all times in life, especially at moments of great difficulty. Joy adapts and changes, but it always endures, even as a flicker of light born of our personal certainty that, when everything is said and done, we are infinitely loved.”
~ Pope Francis (The Joy of the Gospel)