Here’s how to live: Make a million mistakes. - Derek Sivers

People talk about pessimism and optimism by saying, “Glass half-empty or glass half-full?”
But a caveman would say, “Oh my god! A glass! What a great invention! I can see what I’m about to drink! This is amazing! A blanket! A chair! A bed! Food, ready and waiting? This is heaven!”
You don’t have to be a caveman to look around you and appreciate your comforts by imagining life without them.

Your whole experience of life is in your mind.
Focus on your internal world, not external world.

Short-term thinking is the root of most of our problems, from pollution to debt, both personal and global.