I left the corporate world and also my career as a lawyer to start my first company. Guess what, I fucked up hugely. It took me a while to understand and learn from my mistakes. Today I can openly admit that failing with my first business was eventually the best that could happen to me.
Here's the thing, I think you should also do whatever it takes to make your dreams come true. Even if it means to fail. However, be smart and don't waste your time repeating mistakes that have been done by somebody else. Like, for example, moi!