SP 66 - Alice: The Lord has allowed me to understand what the path leading to holiness looks like:
It is a path of constant vigilance and constant struggle with the weaknesses of one's own human nature and with the temptations to which Satan incites the soul. An effort to recognize these temptations before they darken the soul and mind. Holiness is the fruit of victories in subsequent skirmishes and the main battle that is life on earth. The front line is inside a person - in their soul. And regardless of God's help in the form of grace, the decision to win depends solely on the person - on their effort and choice.
There is no holiness without effort, which is why the Lord creates circumstances where one can demonstrate effort in the fight and decisions that determine the choice. These circumstances constantly force one to make ever more perfect efforts to the measure of holiness that GOD wants to give to a soul that wants to be faithful to Him.
Difficulties, wrongs, suffering - everything that is difficult and painful, constitutes these circumstances, to fight not with these circumstances and not with the people who create them, but with oneself, so that Love in the soul may triumph over egocentrism. That is, so that GOD may triumph in the soul. The best way to fight is to give oneself and one's will to GOD, so that He may lead this fight. Then the whole effort consists of trust, thanksgiving and accepting with love everything and everyone as circumstances of sanctification given by GOD.
That is why the path of God's childhood - childlike devotion - is the shortest path to holiness. So-called difficult situations, difficult people, defeats and suffering in life are a chance for the development and holiness of the soul, and they are also a test of this holiness. All persecutions that the saints encountered in their lives were circumstances thanks to which they became saints (because there was no rebellion or escape in them).
SDD 151 - Alice's Confession: I was guilty of Your Love by forgetting about You, about Your constant presence. I was unable to give You all my thoughts during prayer. They often went away, I don't even know where. At first, there were days when I was unable to dismiss hostile thoughts about the sisters. There was also pride. I was unable to gratefully accept the humiliations that She had first asked You for and that You had given me. Criticism of people and a desire for isolation arose. These are probably my greatest sins. Have I forgotten anything?
JESUS: You should also constantly remember the commands that I give you every day. Remember My instructions and try to apply them with greater zeal. Ask for help constantly. Remember also the Words from the Scriptures - they are the complement of what I am saying to you directly.
You ask what the path to holiness is - this is it.