Here's one thing that I've learned recently that I wish had been ingrained into me at the beginning:

You will spend far, far more time reading your own code than writing it.

If you come into coding with that perspective, then good design and habits is something that is logical to prioritize, not merely something that comes from being OCD.

We all grow up learning to write in such a way that we experience writing as something much more time consuming than reading. This is a mindset that has to change when what you're writing is code