Avoid falling in love with ideas. I got this advice several years ago from my printer. He said, "Don't fall in love with a particular type style, because if you do, you'll want to use it everywhere - even in places where it's inappropriate." I think that the same applies to ideas. I've seen people fall in love with a certain approach or system, and then be unable to see the merits of alternative approaches. I think one of life's great thrills is failing out of love with a previously cherished idea. When that happens, you're free to look for new ones.
Have rule-inspecting and rule-discarding sessions within your organization. You may even find some motivational side benefits in this activity - finding and eliminating outmoded rules can be a lot of fun.