As soon as I read "Self-Compassion" I knew it has to be Dr. Kristin Neff; I read her book (https://self-compassion.org/self-compassion-kristin-neff/) a couple years ago and it was quite an eye-opener for me.

Just a note: your link is not working; here's a link to the paper, directly form Dr. Neff's homepage: https://self-compassion.org/wp-content/uploads/publications/...