That’s one of the things I am intrigued with saints, the perseverance in faith, it is heroic. You perceive their love of God by their trust in Him. And they tell us that struggle and difficulty is part of their life, part of the climb, and that faith should tell us to always trust for He is our God (a God that is true love).
“The certainty of hope is part of true repentance, a certainty that is born from faith, in which the Light has greater power and has become flesh in Jesus.” From “Jesus of Nazareth: Holy Week: From the Entrance Into Jerusalem To The Resurrection” by Pope Benedict XVI
Here are some of the other readings that I found after I read this thread, because if you start reading it you are compelled to read more:
From Diary of St Faustina:
1758 My daughter, consider the life of God which is found in the Church for the
salvation and the sanctification of your soul. Consider the use that you make of
these treasures of grace, of these efforts of My love.
1759 Application: O most compassionate Jesus, I have not always known how to profit from these
priceless gifts, because I have paid too little attention to the gift itself and too much to the
vessel in which You were giving me Your gifts. My most sweet Master, it will be different
from now on. I will put Your gifts to the best use of which my soul is capable. Living faith
will support me. Whatever the form might be, under which You send me Your grace, I will
accept it as coming directly from You, without considering the vessel in which You send it. If
it will not always be within my power to accept it with joy, I will always accept it with
submission to Your holy will.
Conference on Spiritual Warfare.
1760 My daughter, I want to teach you about spiritual warfare. Never trust in yourself,
but abandon yourself totally to My will. In desolation, darkness and various
doubts, have recourse to Me and to your spiritual director. He will always answer
you in My name. Do not bargain with any temptation; lock yourself immediately in
My Heart and, at the first opportunity, reveal the temptation to the confessor. Put
your self-love in the last place, so that it does not taint your deeds. Bear with
yourself with great patience. Do not neglect interior mortifications. Always justify
to yourself the opinions of your superiors and of your confessor. Shun murmurers
like a plague. Let all act as they like; you are to act as I want you to.
Observe the rule as faithfully as you can. If someone causes you trouble, think
what good you can do for the person who caused you to suffer. Do not pour out
your feelings. Be silent when you are rebuked. Do not ask everyone’s opinion, but
only the opinion of your confessor; be as frank and simple as a child with him. Do
not become discouraged by ingratitude. Do not examine with curiosity the roads
down which I lead you. When boredom and discouragement beat against your
heart, run away from yourself and hide in My heart. Do not fear struggle; courage
itself often intimidates temptations, and they dare not attack us.
Always fight with the deep conviction that I am with you. Do not be guided by
feeling, because it is not always under your control; but all merit lies in the will.
Always depend upon your superiors, even in the smallest things. I will not delude
you with prospects of peace and consolations; on the contrary, prepare for great
battles. Know that you are now on a great stage where all heaven and earth are
watching you. Fight like a knight, so that I can reward you. Do not be unduly
fearful, because you are not alone.