attacks from the evil one
If you wish to avoid the fierce hatred of the evil one, then refrain from striving for holiness. Satan will still hate you, but he will not hate you as much as the saint. But, of course, this is foolishness! Why would anyone avoid holiness so as to avoid the hatred of the evil one? It is true that the closer we come to God, the more the evil one will seek to destroy us. Though it's good to be aware of this, it's nothing to fear. In fact, attacks from the evil one should be seen as signs to us of our closeness to God (see Diary #412).
Devotion to the souls in Purgatory contains in itself all the works of mercy, which supernaturalized by a spirit of faith, should merit us Heaven. de Sales