In Tehillim (121:5) it states, “Hashem tzilcha,” – “Hashem [is like] your shadow.” In what way is Hashem like a shadow?
When you make shadow puppets and put one finger in front of the light, your shadow will have one finger. When you put your whole hand in front, you see a whole hand.
Hashem responds to us like our shadows do. When we rely on ourselves, Hashem responds by only giving us whatever we can accomplish on our own. But when we rely on Hashem’s mighty hand, he responds with His full strength!
It is up to us to choose how to receive Hashem’s blessings.