Seeing is believing. But positive thinking feels forced. It’s easier to imagine failure than it is glory.
Accept it: It’s unlikely that you’ll ever be a movie star, a famous artist/athlete, nor founder and CEO even if you tried. Success happens to people that either get lucky or strive for that edge. However, you can increase your chances of success if you approach life like an entrepreneur and set out to minimize risk.
Realists see life for what it is and test its limits, setting goals neither too high nor too low. 10% better is better than nothing at all. There’s nothing wrong with a little negativity if it represents reality.