It is impossible to summarize this amazing video, but its words (the first half is original from Brandon Fibbs) are a powerful call to action.

Yes, WE KNOW FOR AN ABSOLUTE FACT that this life is the only life we get to live in while we are in it.  We have no knowledge of what may or may not occur later, so pretending there is another life after this one is a colossal waste. But we KNOW that this life exists and we know that this is the life that must be lived while we have it, regardless whatever else may or may not come later.

If you tolerate mediocrity (or worse) in this lifetime because you believe a better life will come later in heaven, YOU ARE A FUCKING FOOL and you deserve to be ridiculed and mocked for your ignorant foolish beliefs.  Live your life, THIS life, based on what you KNOW, not what you believe or hope or fantasize.