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.
“In Hitchcock's eyes the movement was dramatic, not the acting. When he wanted the audience to be moved, he moved the camera. He was a subtle human being, and he was also the best director I have ever worked with.”