Spirituality is the intersection of three paths: letting go of ego, an unconditional yes to the conditions of human existence, and an immeasurable compassion.
Mindfulness is an ancient meditation mode in which we let go of our fears, our attachments to control and being right, our expectations and entitlements, and our judgments of others. Instead of these popular strategies, we learn to simply stay present opening in the moment - with nothing in the way - so we can experience life as it occurs.
Mindful grief means mourning and letting go of the past without expectation, fear, censure, blame, shame, control and so forth. Without such mindful grief, neither past nor person can be laid to rest.