I think it's imperative to follow your heart and choose a profession you're passionate about, and if you haven't found that 'spark' yet, if you're not sure what you want to do with your lives - be persistent until you do.
It's disingenuous to say that criticism doesn't get to you or you don't hear it or that you ignore it. When everybody says, 'That's crap. I hated that,' you hear it. But it's much, much worse when they're right: when you feel that it is an absolute piece of tosh. I made the film I wanted to make, so
I was always playing the Hammond Organ back to front even during the days of the Nice, going back to 1968. Really what I was doing there, was choosing notes at random and trying to make some sense of them, improvising back to front.