The Catholic Church is always wary of those who preach sensationalism of any sort or do extraordinary things. She suspects almost instinctively that they are doing it more for love of their own reputations than from love of God. The saint does not make his life a spectacle. He begins with the sound, common virtues of the Christian life, and then develops them to an extraordinary degree. St. Vincent de Paul used to say that a Christian should not do extraordinary things, but ordinary things extraordinarily well.
Human beings get to be saints by fighting out the battle with themselves, the flesh and the devil.
Many of the saints were not very saintly before they put themselves to growing in that direction. St. Augustine rather astounded the world by his confession of what he had been in his youth. St. Jerome, the famous Biblical scholar, was a rather irritable old man until his scholarly world began to tumble around his head during the barbarian invasions, and he rose to the heights of divine compassion in response to the misery of the age. The test of the saint is not how he started. He may have been a good man, but one with many imperfections.