Work less than 7 hours a day

I keep trying to hit 7 hours a day, but it is really really hard. Today I got in at 7:30, so subtracting say a half-hour for lunch I should leave at 4pm. Yeterday I left at 4pm so it’s not completely impossible.

I need to find some good trick that helps me leave work.

Actually, I’d like to work even less than 7 hours a day, but 7 hours seems difficult enough. I think I’m going to keep a log book about how many hours I am at work and then i can look back through and see how many hours I work on average.