"Something has changed within me
Something is not the same
I'm through with playing by the rules
Of someone else's game
Too late for second-guessing
Too late to go back to sleep
It's time to trust my instincts
Close my eyes: and leap!
It's time to try Defying gravity
I think I'll try Defying gravity
And you can't pull me down!"
She leapt off of somewhere in order to escape the pressures of having to live up to what people want her to be...instead of what she
wants to be. She knows it's time to try defying gravity instead of living up to ponies standards.
In a few seconds she'll open up her wings and truly be defying gravity.