Meaning of letting go

"There is a life-force within your soul, seek that life. 
There is a gem in the mountain of your body, seek that mine. 
O traveler, if you are in search of That 
Don't look outside, look inside yourself and seek That. 

This aloneness is worth more than a thousand lives. 
This freedom is worth more than all the lands on earth.
To be one with the truth for just a moment,
Is worth more than the world and life itself."

 - Rumi -