So, my policy has always been that if I sit through a meeting where a client asks for new feature "X" and I figure out a way to avoid building the new feature, and either use existing business logic / day-to-day processes, or else find some new way that doesn't involve code, I don't bill for that time. I'd say that I probably give up about 35-40% of potential coding work just by helping them work through that. Which is fine, because it leaves me free time to do other things.

On the other hand, I don't have the option to fail even slightly. I deployed a patch yesterday for an old, rare, logic bug in one reservation system, and within an hour I was being bombarded with edge cases of people seeing their reservations as cancelled during the 15 minute switch-over period.

Sometimes I feel like the job of a programmer for a company is just very different from what I do. If anything goes wrong with anything I deploy, I'm awake for however long it takes to make sure it's right. On the other hand: No PRs, no teamwork. Just a click to deploy once I'm relatively sure. And a lot of responsibility.