Some things will remain hard no matter how much you practice. Usually it just doesn't feel hard anymore when you have enough experience. Being good at something doesn't mean that it's easy and everybody could do it like you do. They don't have your experience in doing so.
At work, I wear multiple hats. During the years those hats might have been changed, but the multitude of them have mostly remained constant. As I get rid of one, there is already a new one waiting for me to wear. I have my hands in many of our operational areas as well as in our internal development.
While I like it that I'm able to contribute in so many different areas sometimes I feel like I should focus more on fewer of them. I can't get deep enough in any of them while I try to keep myself up to date trying to remain relevant on all of them.