Take a look around you. Look at all the things surrounding you right now. I am drafting this on a legal pad, using a ballpoint pen, as I enjoy a cup of coffee. I have my calculator, phone, and laptop within reaching distance too. Think about the device that you are using to read this article. All of these things were built by people. People like you and I. Some of these things were harder to build than others, yes, but they are all useful and were all built by people. Just imagine that!
What are you building?