This poem by Longfellow really speaks to me. Living a full life is about doing — acting in the present moment. The past is gone. The future can't be predicted. Let your actions (now) leave footprints on the sands of time for others to follow.
John Mayer has a song lyric that "I am bigger than my body gives me credit for". I love that. I love that we are so much more than our bodies and that our souls can travel at will to desired places no matter our bodily limitations. I also love that the best place to be is in the present.