Work to connect yourself to the allness of life -- instead of identifying with the smallness of it -- and you'll awaken to a greatness already living within you that is no more bothered by the little things in life than a mountain is made miserable by the rain that falls upon it.
It is quite possible even that the planet would no longer be able to sustain human life. Probably, the planet eventually would regenerate and produce some other life form. Consciousness would flow into some other life form and express itself through that, whatever that would be.