There is No Excuse for Spending your Life in Misery - Monkeys on a Spinning Rock!
Naval Ravikant is the founder of AngelList and an angel investor in numerous companies including several Unicorns such as Twitter, Uber and Yammer. His "Life is Short" philosophy (as told to Tim Ferris) is worth sharing, if you have not read it. Hurry Up and start living. Here it is:
"If you study even the smallest bit of science, you will realizile that, for all practical purposes, we are nothing. We're basically monkeys on a small rock orbiting a small, backwards star in a huge galaxy, which is in an absolutely staggeringly gigantic universe, which itself may be part of a gigantic universe.
This universe has been around for probably 10 billion years or more, and will be around for tens of billions of years afterwards. So your existence, my existence, is just infinitesimal. it is like a firefly blinking once in the night. Nothing that we do lasts. Eventually you will fade, your works will fade, your children will fade, this planet will fade, the sun will fade...it will all be gone.
If you don't believe in an afterlife, then you should realize that this is such a short and precious life, it is really important that you don't spend it being unhappy. There is no excuse for spending most of your life in misery. You've only got 70 years out of the 50 billion or however long the universe is going to be around".