The 80-20 Rule of New Projects vs Maintenance

I was reading a recent article about people managing large computer departments. The main point of the article was:

IT business priority #1 - free up money for new projects.

Basically, too many companies spend 80% of their computer department's programming budget on maintenance of old programs, and only 20% of their budget on new projects. The article suggest that this ratio needs to be inverted to realize the full benefit of the computer department.

That got me wondering. Consider my "discretionary time", that which is left after my job, sleeping, eating, etc. Shouldn't I ideally be spending 80% of that time on new projects, learning, preparing for a 2nd career, or doing something else to improve myself? And should the remaining 20% be on maintenance activities? I'm sure that the amount of my discretionary time spent on routine chores around the house, running errands, going through my email, and taking care of assorted other ongoing obligations adds up to much more the 20%. In fact, it's often more than 80%.

So the question for the day is - how do I reverse that ratio? Obviously it means cutting down the time spent on maintenance chores. This summer for the first time in many years I paid a local high school student to mow my lawn. That's one example, one which I've decided was well worth the money. I'm searching for others now.

One of the big time consumers of my evenings is email. Sometimes it seems that getting that down to 20 minutes a day would be wonderful (for non-work email). I'm not sure how to accomplish this yet though.