> I'm afraid that the solution is: build something small, and use it in production before you add more features.

Gall's Law:

> A complex system that works is invariably found to have evolved from a simple system that worked. A complex system designed from scratch never works and cannot be patched up to make it work. You have to start over with a working simple system.[8]

* https://en.wikipedia.org/wiki/John_Gall_(author)#Gall's_law