From the brokenness of our humanity we can learn the healing and transcendent wisdom of self-acceptance and the non-judgmental acceptance of others. Meditation makes more sense to the broken or humbled parts of us than to the well-defended, successful or public poses that form the more assertive parts of our identity. Simple and pure awareness, without judgment or evaluation, such as we practice in meditation, is always compassionate.
In any activity that requires concentrated effort, the breath quite naturally plays a role. If you have ever tried to thread a needle or repair a watch, you might have observed that without even thinking about it the breath quiets and deepens. Singers, swimmers, people who struggle with panic attacks, and a host of others learn the importance of proper breathing in order to negotiate the respective tasks at hand. Thus, that the art of contemplative practice can be facilitated by the breath should come as no surprise.