The laws of God, like the law of gravity, do not depend upon how I feel about them. They are inexorable.
At the root of all misery is unfulfilled desire.
God sometimes gives us what we want so we'll learn to trust Him to give us what we need.
Love is something worth suffering for.
Loving difficult people will refine us. Perhaps only in heaven will our love be so perfected that we can actually like these people, too. St. Augustine spoke of a man who, on earth, had chronic gas problems; in heaven, his flatulence became perfect music.
As we grow detached from things, we come (with God's help) to master our desires, and we give the mastery over to God. Discipline and divine grace heal the intellect and the will of the effects of concupiscence. We can begin to see things clearly.