The Zohar tells that there is a lower world—our world—and there is a higher world.

Our world must continuously receive from that higher world. But how it receives depends upon our state of mind.

If we glow with joy and vitality, then that higher world as well shines upon us in full glory and abundance.

But if we wallow in depression and anxiety, then we can receive only the metered trickle that squeezes through such a constricted channel.

Depression, anxiety and pessimism—these all damage the channels of blessing from Above.

That is why King David said, “Serve G‑d with joy!” Because your joy here draws upon you another joy from above.