Wavering Confidence

So just as I’ve done a lot of work and feel like I have got my confidence up and I’m starting to work on my venture I randomly stumble across a company/person doing exactly (to the letter) the same as me. They are famous and very established so have a big following and I cannot fault it. All the tutorials and products are so professionally finished and it has totally knocked my confidence. I know Brooke always says this is your brain playing tricks on you but how do you shake off that feeling when I cannot think of one thing that would differ me to them other than.. me I guess! Help!!