It is right here...

There is an illimitable fountain of milk within thee:
Why art thou seeking milk from the pail?
O lake, thou hast a channel to the Sea;
be ashamed to seek water from the pool;
.
.
There is a basket full of loaves on the crown of thy head,
and thou art begging a crust of bread from door to door.

Attend to thine own head, abandon giddy headedness;
go knock at the door of thy heart:
why art thou (knocking) at every door?

Whilst thou art up to the knee in the river water,
thou art heedless of thy self and art seeking water
from this one and that one.

Water in front; and behind too, an unfailing supply of water;
(but) before thine eyes is a barrier and behind them a barrier

Rumi, Mathnawi.