We are not here to do what has already been done.
There are mighty few people who think what they think they think.
Do whatever you do intensely.
Painting should never look as if it were done with difficulty, however difficult it may actually have been.
No work of Art is really ever finished. They only stop at good places.
Don't worry about your originality. You couldn't get rid of it even if you wanted to. It will stick with you and show up for better or worse in spite of all you or anyone else can do.