From an Islamic POV (based on Dr.'Aidh ibn Abdullah
Al-Qarni's La Tahzan):
1. Know that if you do not live within the scope of today,
your thoughts will be scattered, your affairs will become confused, and your
worrying will increase - these realities explain the hadith:
"When you are in the morning, do not expect to see the
evening, and when you are in the evening, do not expect to see the
morning."
2. Forget the past and all that it contained. Being absorbed
in things that are gone is sheer lunacy.
3. Do not be preoccupied with the future. Because the future
is in the world of the unseen, do not let it bother you until it comes.
4. Do not be shaken by criticism; instead, be firm. And know
that, in proportion to your worth, the level of people's criticism rises.
5. Faith in Allah and good deeds: these are the ingredients
that make up a good and happy life.
6. Whoever desires peace, tranquility and comfort can find
it all in the remembrance of Allah.
"Verily in the remembrance of Allah do the hearts
rejoice."
[Ar-Ra'd, 13: 28]
7. You should know with certainty that everything that
happens, occurs in accordance with a divine decree.
8. Do not expect gratitude from anyone.
"We feed you for the sake of Allah alone: no reward do
we desire from you, nor thanks."
[Al-Insaan, 76: 9]
9. Train yourself to be ready and prepared for the worst
eventuality.
10. Perhaps what has happened is in your best interest
(though you may not comprehend how that is so).
"But it is possible that ye dislike a thing which is
good for you, and that ye love a thing which is bad for you. But Allah knoweth,
and ye know not."
[Al-Baqarah, 2: 216]
"It may be that ye dislike a thing, and Allah brings
about through it a great deal of good."
[An-Nisaa', 4: 19]
11. Everything that is decreed for the Muslim is best for
him.
12. Enumerate the blessings of Allah and be thankful for
them.
13. You are better off than many others.
14. Relief comes from one hour to the next.
15. In both times of hardship and ease, one should turn to
supplication and prayer.
"O ye who believe! Seek help with patient perseverance
and Prayer: for Allah is with those who patiently persevere."
[Al-Baqarah, 2: 153]
16. Calamities should strengthen your heart and reshape your
outlook in a positive sense.
17. Indeed, with each difficulty there is relief.
"Verily, with every difficulty there is relief."
[Al-Inshiraah/Ash-Sharh, 94: 6]
18. Do not let trifles be the cause of your destruction.
19. Indeed, your Lord is Oft-Forgiving.
"Pray for His Forgiveness: for He is Oft-Returning (in
Grace and Mercy)."
[An-Nasr, 110: 3]
20. Do not be angry... Do not be angry... Do not be angry.
"Abu Hurairah, radiyallahu 'anhu, reported that a man
said to the Prophet (pbuh): 'Advise me!' The Prophet said, 'Do not become angry
and furious.' The man asked (the same) again and again, and the Prophet said in
each case, 'Do not become angry and furious.'"
[Narrated by Bukhari]
21. Life is bread, water and shade; so do not be perturbed
by a lack of any other material thing.
"And in the heaven is your provision, and that which
you are promised."
[Az-Zaariyaat, 51: 22]
22. Most evil that is supposed to happen never occurs.
23. Look at those who are afflicted and be thankful.
24. When Allah loves a people, He makes them endure trials.