When you copy someone else’s design work, you have to pick it apart in order to understand it and apply it to your particular project. Otherwise, the design just won’t work, or it will seem out of place. Copying effectively teaches you to do it the right way. Nail the basics, and innovate where it makes sense.
Once you are confident in your vision, it is rare to lose it in one fell swoop. There are so few mistakes that lead to the complete annihilation of a dream. More likely, you failed at a strategy level and felt demoralized. This crippled your enthusiasm and you gave up not because you should, but because you felt like it. Your emotions caused you to turn a Stage 1 or Stage 2 failure into a Stage 3 failure. Most of the mistakes that people assume are Failures of Vision are actually Failures of Strategy. Many entrepreneurs, artists, and creators get hung up on a particular version of their idea and when the idea fails they give up on the vision as well. Don’t develop a sense of ownership over the wrong thing. There are nearly infinite ways to achieve your vision if you are willing to be flexible on the details.