What does it mean to live? I think that the definition is different for everyone. For one person it may mean hiking Patagonia, to another, spending the day gardening. To each his own. But I think the main message to take from this quote is to find out what it is that makes you feel alive. Truly alive.
I view this quote as a reminder not to get caught up in the tides of life, but instead to carve my own path. It encourages me to follow the path that makes me happy and stays true to myself.