Spread salam
لَا تَدْخُلُونَ الْجَنَّةَ حَتَّى تُؤْمِنُوا، وَلَا تُؤْمِنُوا حَتَّى تَحَابُّوا، أَوَلَا أَدُلُّكُمْ عَلَى شَيْءٍ إِذَا فَعَلْتُمُوهُ تَحَابَبْتُمْ؟ أَفْشُوا السَّلَامَ بَيْنَكُمْ
La tadkhuluna-l-jannata hatta tu'minu, wa la tu'minu hatta tahabbu. A-wa la adullukum 'ala shay'in idha fa'altumuhu tahababtum? Afshu-s-salama baynakum.
"You will not enter Paradise until you believe, and you will not believe until you love one another. Shall I tell you something that, if you do it, will make you love each other? Spread salam between yourselves."
Narrated by Abu Hurayrah. Sahih Muslim 54
A short reflection
One mechanism, endlessly repeatable. Say salam more and love builds itself.