Dalai Lama:

The first beneficiary of compassion is always oneself. When compassion, or warmheartedness, arises in us and our focus shifts away from our own narrow self-interest, it is as if we open an inner door. It reduces fear, boosts confidence and brings us inner strength. By reducing distrust, it opens us to others and brings us a sense of connection to others, and sense of purpose and meaning in life.