Reflect upon these 2 aayaat and implementation of them will make you the most content and happy of people, and humble & not being amazed with ourselves:
مَآ أَصَابَ مِن مُّصِيبَةٍ۬ فِى ٱلۡأَرۡضِ وَلَا فِىٓ أَنفُسِكُمۡ إِلَّا فِى ڪِتَـٰبٍ۬ مِّن قَبۡلِ أَن نَّبۡرَأَهَآۚ إِنَّ ذَٲلِكَ عَلَى ٱللَّهِ يَسِيرٌ۬ (٢٢)
لِّكَيۡلَا تَأۡسَوۡاْ عَلَىٰ مَا فَاتَكُمۡ وَلَا تَفۡرَحُواْ بِمَآ ءَاتَٮٰڪُمۡۗ وَٱللَّهُ لَا يُحِبُّ كُلَّ مُخۡتَالٍ۬ فَخُورٍ (٢٣)
” No calamity befalls on the earth or in yourselves but is inscribed in the Book of Decrees (Al-Lauh Al-Mahfuz), before We bring it into existence. Verily, that is easy for Allah.
In order that you may not be sad over matters that you fail to get, nor rejoice because of that which has been given to you. And Allah likes not prideful boasters.”
[Soorah Al Hadeed 22-23]