If I may recommend a book about love and kindness, that would be The Book of Love by Rumi. Here is a link to the first pdf I found: http://www.venerabilisopus.org/en/books-samael-aun-weor-gnostic-sacred-esoteric-spiritual/pdf/100/171_rumi-the-book-of-love.pdf

May I too humbly allude to some of my writings which I endeavour to slowly but steadily posts on Steemit.