Sometimes you’ll make a bad investment. Or you’ll lose a big customer. Or your partner screws you over. Or whatever.
That’s just how it goes. Being an entrepreneur means taking risk.
Risk means accepting the chance of failure.
When things don’t go your way, be cool. Don’t rant and rave and blame the world for your mistake.
Dry your eyes and suck it up. Take responsibility.
Be a man.
If you can’t take setbacks on the chin, you can’t be an entrepreneur.