There's only one rule you need to remember: laugh at everything and foget everybody else! It sound egotistical, but it's actually the only cure for those suffering from self-pity.
What is a teacher? I'll tell you: it isn't someone who teaches something, but someone who inspires the student to give of her best in order to discover what she already knows.
My second piece of advice is to stay global. As the world continues to change and we become more connected to each other, globalization will bring both benefits and disruptions to our lives. But either way, it's here, and it's not going away.