It's true... originality is tough. It seems the best we can ever do is a different combination of things that have already been done before. :/
True, echoing the words of King Solomon, 'there is nothing new under the sun', and that was written over 1500 years ago
My last original Idea got me C+ :( And it's true, I mostly find my original ideas have been already presented
I have original ideas all the time. But I don't think it matters if someone else has thought of it already. It's original to you, as long as you haven't heard it before. Makes it no less creative and brilliant than the first person to think of it.