Earth 100 Million Years From Now
It is far too easy to assume the Earth has always existed as it exists now. There is nothing like a couple of good courses in geology to learn the only constant, change, occurs slowly over time or catastrophically in a sudden jolt. The slow changes require only adaptability, however, catastrophic change can devastate an individual and continents.
The trick, it seems to me, is to live each moment with full gusto, taking on those people and things that interest you and sloughing off those that don't. Reach inside for your moral compass and pay attention to the consequences of words and deeds. Live life according to your own lights, listen to ideas from others and chart your own course. You are alive not to please others; you exist to be all that you are. Your instruction manual resides within you.