That really hits home. I spent a couple weeks in primary school sketching my own blueprints for great inventions. Nothing that could've ever worked (I didn't know what a transistor actually was, but my machine certainly had a lot of them!), but in hindsight a good start for a curious tech-minded child - switches that opened/closed circuits, wires to connect the various imaginary lasers and electromagnets, and so on. On the back of the paper I scrawled documentation to remember what the darn thing was actually supposed to do (the biggest one? Save people who fall out of airplanes, which to my 9 year old mind was a big issue that needed to be solved)

One day my teacher noticed me doodling in the back, so she promptly grabbed all the "blueprints" I was so proud of, tore them up, and tossed them in the trash. I guess I get discouraged easier than you though, since I didn't design a thing for many years afterwards.