11. You can’t predict the future.
Everyone thinks they can, but they can’t.
This applies not just to trading, but to everything. You could be married for 10 years, and the next thing you know, you're divorced.
You could be healthy all your life and eat your vegetables and exercise and reduce stress, and a year later you could be dead from cancer.
You’d have much less stress if you let go of trying to predict the future.
But you can always seek to increase the odds in your favor. If I don’t jump off bridges, for instance, it’s more likely I’ll be alive a year from now. But certainly a path to unhappiness is thinking the future can be predicted and controlled.