“Original thoughts” matter much less than what you do with them. The steam engine wasn’t an original thought at the time it was developed, the ancient Romans understood the principles of steam power nearly 2 millennia ago, but it took until the 19th century for someone to take that idea and develop industrialization.

Could be you are having new ideas. But just someone in the past had thought of something similar. Your idea might be unique. But you may convince yourself it isn’t due to the similarities.