It's so easy to get carried away by enthusiam, ambition, pride, fear ... it happens to most of us all the time. Luckily I belong to the people who run out of energy fast. Therefore I need to stop and break and make a reality check for myself regularly.
I'm still driven by the ambition to achieve greatness (change the world, become famous, buy myself an island). We need to use our brains first to understand how wrong this motivation is, then to build great applications.
Edit: In my Python days I was a great admirerer of Jesse. The times he created the multiprocessing module. I hope he will get back on his feet.