The only limitation is that which one sets up in one's own mind.
We all have things that limit us and that challenge us. But really, our real limitations are the ones we believe.
You yourself are your own obstacle, rise above yourself.
You'll never be greater than yourself.
The only thing that limits you right now is you.
If you believe you can only go so far, it is an obstacle.
Nothing's holding me back. If I'm held back, the only thing holding me back was me.
