True in a way, because if you can see through some people's mind you'd know that the heart of man is desperately wicked. But if you look at this on the positive side, on the brighter mode, then we should believe that we can become all that we ever desire to be.
I have experiences that tells me of a truth your challenges makes you stronger. They make you wiser, they make you a better person, your thinking is broader and you become more creative when you go through challenges. So never believe you're going down with this, you will come out of it stronger and much better than you were before.