I'm a forty-something guy who's enjoying his mid-life crisis by throwing himself into yoga and meditation.
Our mothers of former lives and our mother of this present life are all our mothers and are all equally kind to us. It is incorrect to reason that our mothers of former lives are no longer our mothers just because a long time has passed since they actually cared for us. If our present mother were to die today, would she cease to be our mother? No, we would still regard her as our mother and pray for her happiness. The same is true of all our previous mothers – they died, yet they remain our mothers. It is only because of the changes in our external appearance that we do not recognize each other.
In our daily life, we see many different living beings, both human and non-human. We regard some as friends, some as enemies, and most as strangers. These distinctions are made by our mistaken minds; they are not verified by valid minds. Rather than following such mistaken minds, we should recognize and believe that all living beings are our mothers. Whoever we meet, we should think ‘This person is my mother.’ In this way, we shall generate a warm heart and a feeling of being equally close to all living beings. Our belief that all living beings are our mothers is wisdom because it understands a meaningful object, which is that all living beings are our mothers. Through this understanding we shall experience great meaning in this life and in countless future lives. We should never abandon this beneficial belief or view.
Geshe Kelsang Gyatso - Modern Buddhism: The Path of Compassion and Wisdom - Volume 1 Sutra