Do we have the power to lift ourselves up? 

I am afraid we can't. Like the crane in this picture: powerful, tall, and mighty but incapable of lifting itself up, it can only lift a crane like itself like we can another. 

And the crane is not weak for this failure; sure, it gets its power from somewhere else, but besides that, it can move around, stand strong against nature, and counters the loads it carries with flair. 

The crane is a mighty structure for what it's made for.