"At each point of your life you should have a mentor."
That's one of the most important things I learned from Dr. Ned Roberto when I was his student for market research. He explained to me that to continue learning one must continue learning and you also have to learn from those who are already successful. You don't actually need to tell the person that he/she is your mentor. All you need to do is to be very observant and pick up important skills, knowledge and behavior from your mentor.
I've been following this advise ever since Lolo Ned mentioned it to me and it has helped me to learn more and improve myself. Back when I was still working for a local company I oftentimes observed my superiors. I was lucky to have had the chance to be exposed to executives (president, VPs etc.) and I picked up a lot from observing how they worked, how they thought about things, how they communicated, how they handled people etc. It certainly helped a lot because I learned how to work well with higher management and I learned how to get my projects approved easily! Haha.
Now I am still doing the same thing. I guess I'm lucky to get a wider reach now, so I actually have more mentors! My Dad's college seatmate (he's now the Speaker of the House of Representatives) told him when I was just twelve, "You have a very observant daughter" (I kinda told him that it looked like the ceiling of his office might fall down on him anytime hehehe). Eeeep! (I hope I did not embarrass my Dad so much.) Anyway, my being observant has so far helped in the past few years.