“Whether you think you can or think you can’t, you’re right”, -Henry Ford
“Argue for your limitations and you get to keep them.” -Richard Bach
“It’s a wonderful thing to be optimistic. It keeps you healthy and it keeps you resilient.” -Daniel Kahneman
Belief is a choice. And once you choose your belief, you will inevitably find and favor evidence that supports your belief while ignoring evidence that counters it. This is confirmation bias at work. And like any cognitive bias, the key is awareness.
But if you had to choose, why not choose optimism?
Once you choose, then find evidence to support your optimism.
Or better yet, create your own evidence for others to find and be optimistic.