If we don't learn the skill of gratitude we'll never be grateful for what we've learned. Hopefully you appreciate not only the amazing ability we have to learn new things but also the value added to your life.
To gain greater clarity & purpose with our knowledge in certain areas it can be helpful to "begin again". This serves as a rediscovering of what it means to us today & how the meaning has changed from when we originally tackled it.
Greater self-consciousness & appreciation in any knowledge area increases its value to us. Leadership is one of those things. Not only are new theories & trends emerging constantly but we're also dynamic people with new experiences that inform our lives. To encourage the re-examination, here's a free introductory course!
Those leadership books on your shelf need some dusting off as well. They aren't doing you any good sitting on the shelf. Take one down, get through it again & I'll bet you connect with it in a new refreshing way!