I didn't have any doubts about my choice of career, but I had constant doubts about my ability, yes.
I have equal parts film and digital cameras in my collection. I think that there are ways to Photoshop photos so that they look like you shot them on film, but is that as rewarding? It just depends on the person.
My psychiatrist told me I was crazy and I said I want a second opinion. He said okay, you're ugly too.