Sometimes the impact is more subtle. When I first graduated from college and started working as a programmer, I stopped writing. But as I moved up the ladder to the point where I was managing programmers rather than getting to do the fun stuff myself, I once again discovered within me the desire to write.
It took me a while to make the connection. To realize that I was a creative person, and if I couldn't satisfy my creative urges in one venue, I'd turn to another.
Fast forward to last Friday. In my new assignment at MegaCorp, I've been asked to come up with the most efficient method for processing currency adjustments. After a couple of attempts, I created a script that produces the right answers, but it takes too long to run.
By coincidence, after the early morning writing session on Friday, I'd been stuck on a plot point. Normally this would mean that throughout the day my subconscious would be working on the plot point. But instead it had been preempted by the programming challenge. When I had the "Ah ha!" moment and reached for my pen, it was not to jot down ideas for the next scene, but rather a new idea for setting limits to the data blocks being calculated.
Even after I'd gone home, and immersed myself in the story once again, it was hard to get my brain back into writing mode. The creative idea generator wanted to solve the programming problem, and I had to tell myself that it was the weekend and I would not under any circumstances allow myself to power up my laptop to work on the day job.
Fortunately the opportunities for creative coding are few and far between, otherwise this balance would be even tougher than it is. But perhaps this explains why Einstein did his best work when he was employed as a patent clerk :-)