Compassion is a big thing in Buddhism and pretty much any other religious or spiritual practice I can think of. How do we put ourselves in the frame of mind to choose compassion over feeling irritated, angry and judgmental toward another person? And how do we choose compassion over disappointment in ourselves?
For me, if I am feeling irritated or angry at someone, it helps to first make friends with the feeling (not push it away), give it a little space, and be kind and gentle to myself. As I take care of myself and this feeling of irritation, I feel my heart open a little and I’m able to soften toward the other person. It’s an opportunity to thank them, really, for giving me the chance to love myself.