When I was younger I read the book "Steve Jobs and the Next Big Thing". It was a book about Steve Jobs and NeXT, written before Apple bought Next but far enough along that it was clear that NeXT wasn't going to work out.

It's a really interesting book because it was essentially saying that Steve Jobs was a terrible manager and NeXT was a disaster. I don't think it was wrong either. NeXT was a disaster for its investors.

The lessons I take from that story are: You can do a hundred things wrong and one thing right and the one thing may save you. Most everything NeXT did failed but they created OSX. No one is a perfect genius, everybody makes mistakes, and the most effective people learn from their setbacks.