What the hell?

It has been said that to find out the extent of our abilities, we must step out of our comfort zone. But what if we are thrown out? Are we destined to suffer? And if not, are the abilities found as a result truly our own? or do they belong to someone else? To the person that we become?
If your enemy is an angel, does that make you a devil? And if a higher power decides to destroy you, is it wrong for you to fight back?