0
Don't follow your passion. What you take out of the world...is much less important than what you put into the world. Follow your contribution instead. Find the thing you're great at, put that into the world, contribute to others, help the world be better.

0
The big thing is to focus all of your energy on is product/market fit. Get to a product that people are adopting very quickly, or that you can reliably sell repeatedly. To some extent, everything else(culture, management, etc) is secondary. Don't take your eyes off the prize.

0
Start a company or join a startup and learn what the process of building a company feels like. It's almost impossible to learn any other way.

0
To be an entrepreneur, you have to be willing to be completely vulnerable and think entirely for yourself. I imagine those can be learned, but I am not sure.