I am currently reading Divine Mercy in My Soul, more commonly called The Diary, as part of my Lenten practices. I have read excerpts of The Diary before but this time, I intend to read the whole book. It is a rather large book with over 700 pages! This is primarily a book for spiritual reading and so I suspect that this book will take me quite some time to finish. Hopefully, by Easter (or at least Divine Mercy Sunday), I will be finished with my first reading of The Diary.
From Divine Mercy in My Soul: Diary of Saint Maria Faustina Kowalska by Saint Maria Faustina Kowalska (paragraph 56):
From the beginning I have been aware of my weakness. I know very well what I am of myself, because for this purpose Jesus has opened the eyes of my soul;
I am an abyss of misery, and hence I understand that whatever good
there is in my soul consists solely of His holy grace.