When I was younger I admired people who are naturally smart because they achieved great things. Now that I am older, I admire people who have worked hard to overcome their weaknesses even if their achievements may be more modest.

edit: on a similar note, I think I finally understand what it means to "make a difference where you are." There are people around me who might not be changing the world, but they have done more to inspire me to do the best I can than other big names (eg Einstein) could have ever done. They are making a difference in me, and to me, that's all I need.