We all have become very mean people in this world. We have forgotten the teachings of Quran and Hadeeth. We try to twist religion to suit us. In fact, when you actually start reading the Quran with meaning, every little doubt is cleared with ease. Nothing in the Quran is not followable in today's world. The message is universal and for all times. But we follow what suits us and what we are already following. And we discard which does not suit us. In fact, at all times, our endeavour should be to learn, grow and correct where were wrong till now.
Coming back to point and main question - What is Righteousness ?
According to Surah Al- Baqarah (Verse No 177) :
''Righteousness is not that you turn your faces towards the east or the west, but (true) righteousness is (in) one who believes in Allah, the Last Day, the angels, the Book, and the prophets and gives wealth, in spite of love for it, to relatives, orphans, the needy, the traveller, those who ask (for help), and for freeing slaves ; (and who) establishes prayer and gives zakat; (those who) fulfill their promise when they promise; and (those who) are patient in poverty and hardship and during battle. Those are the ones who have been true, and it is those who are the righteous.''
This is word to word from Quran. In this short verse Allah says everything that HE expects from humans in conduct.
May Allah guide us all on the right path.