Phil. 4:4-9: Rejoice in the Lord always. I shall say it again: rejoice! Your kindness should be known to all. The Lord is near. Have no anxiety at all, but in everything, by prayer and petition, with thanksgiving, make your requests known to God. Then the peace of God that surpasses all understanding will guard your hearts and minds in Christ Jesus. Finally, brothers, whatever is true, whatever is honorable, whatever is just, whatever is pure, whatever is lovely, whatever is gracious, if there is any excellence and if there is anything worthy of praise, think about these things. Keep on doing what you have learned and received and heard and seen in me. Then the God of peace will be with you.

Nada Te Turbe
By Teresa of Avila (1515-82)
 
Let nothing disturb you
Nothing affright you,
All things are passing,
God never changes,
Patient endurance
Attains to all things,
Whoever possesses GOD
Is wanting in nothing
GOD Alone Suffices.

"What does it profit you to give God one thing if He asks of you another? Consider what it is God wants, and then do it."
St. John of the Cross

Matt. 6:31-34: So do not worry and say, ‘What are we to eat?’ or ‘What are we to drink?’ or ‘What are we to wear?’ All these things the pagans seek. Your heavenly Father knows that you need them all. But seek first the kingdom [of God] and his righteousness, and all these things will be given you besides. Do not worry about tomorrow; tomorrow will take care of itself. Sufficient for a day is its own evil.

"It is love alone that counts."
St. Therese of Lisieux

"A different reward is received by the soul who perceives only My will, which, as has been said, wishes nothing else but your good; so that everything which I give or permit to happen to you, I give so that you may arrive at the end for which I created you." St. Catherine of Siena

On Penance by Sr. Lucia of Fatima:
“Many persons feeling that the word penance implies great austerities, and not feeling that they have the strength for great sacrifices, become discouraged and continue a life of lukewarmness and sin.” Then she said Our Lord explained to her: “The sacrifice required of every person is the fulfillment of his duties in life and the observance of My law. This is the penance that I now seek and require.”

How To Be Happy:
Psalm 1:1-3:
"Happy are those who do not follow the counsel of the wicked, Nor go the way of sinners, nor sit in company with scoffers. Rather, the law of the LORD is their joy; God’s law they study day and night. They are like a tree planted near streams of water, that yields its fruit in season; Its leaves never wither; whatever they do prospers."

Love Priorities
"When I have learnt to love God better than my earthly dearest, I shall love my earthly dearest better than I do now. In so far as I learn to love my earthly dearest at the expense of God and instead of God, I shall be moving towards the state in which I shall not love my earthly dearest at all. When first things are put first, second things are not suppressed but increased." – C. S. Lewis

“Through persecutions, humiliations and failures, an apostle learns not to trust in his own powers, but to be convinced of his own insufficiency and of the insufficiency of all human resources, and therefore to put all his hope in God alone. He learns to work solely for the love of God, without seeking the comfort of success, to free himself from the opinions of men, and to act independently of their approval or disapproval, attending only to God’s judgment. The tribulation he encounters in his apostolic activities constitute his dark night, comparable to that of the contemplatives; a painful night, but most precious, because it is intended to purify him from all traces of self-love, from vanity, from attachment to creatures and from their esteem. If this night is accepted with good will, it will lead him to an ever greater purity and therefore to a deeper communion with God and to a more fruitful apostolate. He must, then, remain firm in his hope, both in personal sanctification. “Therefore, my beloved brethren” St. Paul exhorts “be steadfast, immovable, always abounding the work of the Lord, knowing that in the Lord your labor is not in vain” (1 Cor 15:58)
– From “Divine Intimacy” by Father Gabriel, OCD

From The Dialog of St. Catherine of Siena
(about not judging among other things)

"Another thing is necessary for you to arrive at this union and purity, namely, that you should never judge the will of man in anything that you may see done or said by any creature whatsoever, either to yourself or to others. My will alone should you consider, both in them and in yourself. And, if you should see evident sins or defects, draw out of those thorns the rose, that is to say, offer them to Me, with holy compassion. In the case of injuries done to yourself, judge that My will permits this in order to prove virtue in yourself, and in My other servants, esteeming that he who acts thus does so as the instrument of My will; perceiving, moreover, that such apparent sinners may frequently have a good intention, for no one can judge the secrets of the heart of man. That which you do not see you should not judge in your mind, even though it may externally be open mortal sin, seeing nothing in others, but My will, not in order to judge, but, as has been said, with holy compassion. In this way you will arrive at perfect purity, because acting thus, your mind will not be scandalized, either in Me or in your neighbor. Otherwise you fall into contempt of your neighbor, if you judge his evil will towards you, instead of My will acting in him. Such contempt and scandal separates the soul from Me, and prevents perfection, and, in some cases, deprives a man of grace, more or less according to the gravity of his contempt, and the hatred which his judgment has conceived against his neighbor.

"A different reward is received by the soul who perceives only My will, which, as has been said, wishes nothing else but your good; so that everything which I give or permit to happen to you, I give so that you may arrive at the end for which I created you. And because the soul remains always in the love of her neighbor, she remains always in Mine, and thus remains united to Me. Wherefore, in order to arrive at purity, you must entreat Me to do three things: to grant you to be united to Me by the affection of love, retaining in your memory the benefits you have received from Me; and with the eye of your intellect to see the affection of My love, with which I love you inestimably; and in the will of others to discern My will only, and not their evil will, for I am their Judge, not you, and, in doing this, you will arrive at all perfection.

"This was the doctrine given to you by My Truth, if you remember well. Now I tell you, dearest daughter, that such as these, who have learnt this doctrine, taste the earnest of eternal life in this life; and, if you have well retained this doctrine, you will not fall into the snares of the Devil, because you will recognize them in the case about which you have asked Me.

"But, nevertheless, in order to satisfy your desire more clearly, I will tell you and show you how men should never discern by judgment, but with holy compassion."