To be grateful for the good things that happen in our lives is easy, but to be grateful for all our lives—the good as well as the bad, the moments of joy as well as the moments of sorrow, the successes as well as the failures, the rewards as well as the rejections—that requires hard spiritual work. Still, we are only truly grateful people when we can say thank you to all that has brought us to the present moment.
There are lights which ascend and lights which descend. The ascending lights are the lights of the heart; the descending lights are those of the Throne. The false self is the veil between the Throne and the heart, like springs toward like. Light ascends toward light and light descends upon light, and "it is light upon light."