From that point on I made it a priority to be home by 6PM so that we could have dinner with the family at 6:30. No more late nights, no more stressing about being the first guy to leave the office. Instead I was going to have a relationship with my kids and share in the adventures of their childhood.
It did affect my career, nobody who wanted to get to VP level ever went home on time AFAICT. But it gave me focus in that I knew I was going to roll out of the office between 5:30 and 5:45 so my deadlines were set accordingly. I did log in some evenings after the kids had gone to bed but it wasn't the "usual" thing. And the wife and I spread out the vacation so that every month we had a 3 day weekend (either from holidays or by using a vacation day.) It made things much more tolerable.