If I was ever asked for a quote, this is what I would want to remember to say.

To have a a fulfilling life one must have a real sense that one contributes to meaningful relationships.

If one recognizes that there is a need for a meaningful relationship with your body, your mind, your soul, your community, your planet, and your version of God and one sets about deliberately with one's WILL to invoke a sense of appreciation in each of these perspectives of life then fulfilment is within your grasp.