Yep that is Edward James Olmos talking to Joaquin Phoenix (narrating) in the trailer to I'm Still Here.
Transcript of what EJO says:
That's you, drops of water. And you're on top of the mountain of success. But one day you start sliding down the mountain and you think wait a minute, "I'm a mountain top water drop, I don't belong in this valley, this river, this little dark ocean with all these drops of water." Then one day it gets hot, and you slowly evaporate into air, way up higher than any mountain top. All the way to the heavens. Then you understand that it was at your lowest that you were closest to God. Life's a journey that goes round and round and the end is closest to the beginning. So if it's change you need, relish the journey.