The only things that hold us back in life are our mistaken assumptions. Discard them and you are free to fly.
It is almost never a lack of knowledge that does us in, but rather our reliance on facts that turn out to be false.
Our literature, our culture, has impregnated us with many beliefs, some of which are still valid, but many of which turn out, on careful examination, to be false.
Time to cleanse our mental hard drives of unnecessary and contradictory files. Uninstall the obsolete.