Such a large company that each area has its own subculture.
Hardest - long and busy days. Rarely get a formal break and usually eat lunch at my desk just to try and keep up. Other members of my team say they are bored and don't have enough to do but based on how the work is split a few of us can't keep up and delegating is hard based on the nature - more... of the role.
Most enjoyable: the rare patient interactions I get. When I can actually see the difference I am making or when one of the leaders in my larger department takes the time to truly discuss the strategic initiatives rather than just ... - less