Suhaib reported that Allah’s Messenger (ﷺ) said:

Strange are the ways of a believer for there is good in every affair of his and this is not the case with anyone else except in the case of a believer for if he has an occasion to feel delight, he thanks (God), thus there is a good for him in it, and if he gets into trouble and shows resignation (and endures it patiently), there is a good for him in it.

حَدَّثَنَا هَدَّابُ بْنُ خَالِدٍ الأَزْدِيُّ، وَشَيْبَانُ بْنُ فَرُّوخَ، جَمِيعًا عَنْ سُلَيْمَانَ بْنِ الْمُغِيرَةِ، – وَاللَّفْظُ لِشَيْبَانَ – حَدَّثَنَا سُلَيْمَانُ، حَدَّثَنَا ثَابِتٌ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى، عَنْ صُهَيْبٍ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ “‏ عَجَبًا لأَمْرِ الْمُؤْمِنِ إِنَّ أَمْرَهُ كُلَّهُ خَيْرٌ وَلَيْسَ ذَاكَ لأَحَدٍ إِلاَّ لِلْمُؤْمِنِ إِنْ أَصَابَتْهُ سَرَّاءُ شَكَرَ فَكَانَ خَيْرًا لَهُ وَإِنْ أَصَابَتْهُ ضَرَّاءُ صَبَرَ فَكَانَ خَيْرًا لَهُ ‏”‏ ‏.‏

Additional reading

A Heart Full of Joy: 50 Beautiful Quotes on Gratitude

A Wonderful Hadith About Gratitude

Ted Talk: Louie Schwartzberg: Nature. Beauty. Gratitude.

Commentary of Surah Rehman with one picture in one paragraph