This is the Green Lantern power symbol from DC Comics. It still needs to have the color added.
The GL ring is used by will power and with enough will power it can do almost anything the wearer can think of.
I have always thought that if you set your mind to something you can do most anything or overcome anything.
That is why I decided to get this tattoo because I have lots of will power, and because I always thought that the GL was a great hero.