I enjoyed mentoring and leading younger officers. I also enjoyed working at the operational level, designing operations that involved units across the globe, synchronizing their actions on one objective.
I know this sounds trite, but always do your best in whatever assignment given. I ended up commanding twice, once was a recruiting company, a position I held for over four years. It was one of the hardest periods of my twenty-plus years as an officer. That said, this time helped me in a wide variety of ways.