Realistically, you'll accomplish more in those 90 minutes of strategic project work than in the other seven hours of crisis management combined. That's what you're in business for. Ironically, most managers don't do it. It's fine to work on projects with urgent deadlines, but at least spend the first hour on the long-term profit project. Then work on projects with critical deadlines.
Administrative activities are some of the most important tasks for a manager.
It's the tedious, mindless reporting and paperwork that simply has to be done. And it's the lowest form of work for any manager. It should be automated, delegated or outsourced. The problem is that adminis-trivia is seductive because it's easy to do and it usually has a deadline. Ditto for dealing with customer requests that should be handled by your employees.