If you’re in the early stages of a product, you’re gonna design and write a lot of things that aren’t right. That’s the work. It’s what you’re supposed to do. It doesn’t mean that what you’ve done is ‘wrong’, it just means that it’s not right yet. It’s a process. You’re not bad at what you do if you don’t get it first time. If you don’t go through the process you’ll end up with a half-baked product.

From Denise Wilton's weeknotes

Atomic design is a mental model that enables designers to create both the parts and the whole of a UI design system concurrently. It is not a rigid system that dictates a particular process, but rather a framework for building design systems efficiently and consistently.

Vitaly Friedman - Taking Pattern Libraries To The Next Level

UX design begins by learning about the business model, doing user research and understanding how a service can fit into the users’ lives in a meaningful way. Thus UX design has a crucial part in defining the business strategy, providing baselines for business decisions with such design deliverables as personas or user stories. A UX-driven process doesn’t end with the UIs either, it’s also about testing with people, supporting development, making ongoing adjustments even after the launch.

UX Myths - Myth #31: UX design is a step in a project.