The past is never dead. It's not even past.
The mind is a system of organs of computation, designed by natural selection to solve the kinds of problems our ancestors faced in their foraging way of life.
"Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful."
The world is not a problem to be solved; it is a living being to which we belong.
Life is too short to worry about what other people think.