Do you know who I am...

Who am I riddle.

I am your heart's desire
but your heart's deepest fear.

I am there when you are content
and while you're depressed.

I am given without thought
and earned throughout time.

When I am tere you rarely notice me
but when I am taken away I won't be forgotten.

I would ask who I was
but I already know.

I surround you while you sleep
I'm there when you awake.

There is no stopping me
I've been here for millions of years.

To know who I am
You must dig deep inside and live.