I think everyone would seriously benefit from learning poker. I used to play professionally and the idea of looking at things as probabilistic bets, and in terms of expected value is so deeply rooted in my mind

Investments are bets. Most sane investors aren't putting it all on one thing

Startups are bets

Applying for jobs. Sales. Dating. Health. Basically everything

You risk $X money and time for a payoff of $Y that comes Z%

You can make the best decision and have a bad outcome because there are so many unknowns. This isn't chess

You can play everything wrong and still hit it out of the park

I mean this is one of the range of outcomes that could've happened. You can't declare yourself a success or failure from one project

Just keep making good decisions and don't risk it all, and you'll more than likely end up fine