The overall market has fallen in excess of 40% several times, and has always recovered to make new highs. We continuously hear that "this is the worst I have ever seen it" but the market doesn't fall by 40% when the outlook looks good! Through all bear markets it is logical to think people thought this was "the worst they've ever lived through". It's understandable if you are leveraged up big that you would be panicking, but if you have more than a 10 year outlook, then there is no need to panic.
Just remember, hindsight is 20/20
Just remember, hindsight is 20/20