Our Lord proclaimed through St. Matthew: My yoke is sweet and my burden light [Mt 11:30], the burden being the cross. If individuals resolutely submit to the carrying of the cross, if they decidedly want to find and endure trial in all things for God, they will discover in all of them great relief and sweetness.
Saint John of the Cross
The Ascent of Mount Carmel: Book Two, Chap. 7, no. 7
John of the Cross, St. 1991, The Collected Works of St. John of the Cross, Revised Edition, translated from the Spanish by Kavanaugh, K and Rodriguez, O with revisions and introductions by Kavanaugh, K, ICS Publications, Washington DC.