I have been a musician since I was 15 years old. My first guitar amp was extracted from a tube phonograph that I hot-rodded. I was a beta tester for the original Mini-Moog synthesizer. I toured with Tiny Tim.
Laziness is the mother of invention. Rather than building something from scratch, it is often easier to start with something that is close to what you are looking for and then modify it. Make it submit to your will.
You may end up in a place different than you were headed but - there you are.