Doubt and despair have their deepest roots in a fundamental distrust of God. It is quite often a long journey before a human being is truly convinced that God really wants the very best for him or her.
As long as your heart remains unconvinced that the one who has created and sustains you, loves you and leads you, through whatever happens, you will not find lasting peace.
You have several resources with which you can help yourself toward a firm belief in love. You can try to confront your doubt by emphasizing trust and confidence; you can open your heart to receive testimony and preaching about God; most importantly, you can listen to God’s own word.
God’s preeminent message is that he is love. This message is in itself effective and active. If you listen to it openly, it will reach your innermost recesses.
Emotions of love will not reach the core of your being; only faith does that. The capacity for faith is like a small seed laid down in you. To some extent, it is up to you to decide whether weeds and drought are to suffocate the faith when it begins to sprout. You have within you an ability to turn your gaze toward God and turn yourself over to him with trust. Then the seed will flourish.
~ A Meditation by Father Wilfrid Stinissen, O.C.D.