Three of my favorite spiritual leaders are Eckhart Tolle, Ram Dass and Jim Carrey who all were able to awaken my amazement of this universe and teach me to live with an attitude of gratitude.  They also taught me the importance of having a higher power and a purpose in this world of pain and suffering.  They have both helped lift my depression in dark times and lead me to a spiritual awakening.  Hopefully you get something out of these videos.