If you're not failing every now and again, it's a sign you're not doing anything very innovative.
You can't be afraid of failure and you can't be afraid of success, because either one gets in the way of your work.
It's not necessary to fear the prospect of failure but to be determined not to fail.
FAILURE, IT'S NOT NECESSARY TO FEAR THE PROSPECT OF FAILURE
Success represents the 1% of your work which results from the 99% that is called failure.