From St Louis de Montfort (Friends of the Cross):
When we are told to love the cross, that does not refer to an emotional love, impossible to our human nature.
There are three kinds of love: emotional love, rational love, and the supernatural love of faith. In other words, the love that resides in the lower part of man, in his body; the love in the higher part, his reason; and the love in the highest part of man, in the summit of the soul, that is, the intelligence enlightened by faith.
God does not ask you to love the cross with the will of the flesh. Since the flesh is subject to sin and corruption, all that proceeds from it is perverted and, of itself, cannot be submissive to the will of God and his crucifying law. It was this human will our Lord referred to in the Garden of Olives when he cried out, “Father, let your will be done, not mine.” If the lower part of Christ’s human nature, although so holy, could not love the cross continuously, then with still greater reason will our tainted nature reject it. It is true that we may sometimes experience even a sensible joy in our sufferings, as many of the saints have done; but that joy does not come from the body, even though it is experienced in the body. It comes from the soul, which is so overwhelmed with the divine joy of the Holy Spirit that it overflows into the body. In that way, someone who is suffering greatly can say with the psalmist, “My heart and my flesh ring out their joy to God, the living God.”
There is another love of the cross which I have called rational love and which is in the higher part of man, the mind. This love is entirely spiritual; it springs from the knowledge of how happy we can be in suffering for God, and so it can be experienced by the soul, to which it gives interior joy and strength. But although this rational and perceptible joy is good, in fact, excellent, it is not always necessary in order to suffer joyfully for God’s sake.
And so there is a third kind of love, which is called by the masters of the spiritual life the love of the summit of the soul, and which is known to philosophers as the love of the intellect. In this, without any feeling of joy in the senses or pleasure in the mind, we love the cross we are carrying, by the light of pure faith, and take delight in it, even though the lower part of our nature may be in a state of conflict and disturbance, groaning and complaining, weeping and longing for relief. In this case, we can say with our Lord, “Father, let Your will be done, not mine;” or with our Lady, “I am the slave of the Lord: let what you have said be done to me.”
It is with one of these two higher loves that we should love and accept the cross.