5. Self awareness
Many will say they have rich life experience, but when was the last time you really stopped to think of all you've learned throughout life?
Try this exercise: Write down your three biggest failures and your three biggest successes. Next to each of them write some of the events that lead to it and the lessons you learned. Look for patterns, without pride or regret, simple patterns to teach you about how you used each experience to drive you forward. After all, knowing yourself is the biggest challenge of all.
6. Know what goes on around youYes, the news is often dramatic, misrepresented or just depressing. But it's hard to make balanced decisions for yourself and others if you don't learn from the mistakes that happen to others and to on larger scales, to your city, country and world. Keep updated, read a newspaper, watch the news or just read a news site online from time to time. Read the articles, not just headlines, and understand how you fit into this bigger world, and where you stand. This is crucial for true wisdom.