When I was working on my resume, I realized it had a lot of fluff. I had jobs whose bullets were obvious from the title, I had many bullets I didn't need.
So I thought about it, and I realized that I needed to figure out what I wanted my resume to say, then get rid of everything that didn't contribute to that. Instead of "TA for database course" having 3 bullets, it got 0. I didn't want to explain what I'd done, I wanted to show that I know what I'm talking about with databases. Jobs from 2000 didn't need 3 bullets, as I've done those things later in life.
But basically, condensing what you want to say down into a few major points is really powerful. As much as you live every day exhibiting these traits, taking an inventory and making them stronger, more pronounced, will stengthen your conviction. And it will surprise you how cool you are.