Defense seemed fairly easy back then. What I didn't know in high school was how much better I was about to become in college. You can look at my position in this game as a 5-10 player, and see that the majority of point guards are smaller and quicker than I am. The edge that I have is that I am a lot bigger, physically stronger, and I use that to my advantage instead of allowing it to be a disadvantage. One of my biggest strengths as a defensive player is my ability to anticipate.
Anticipation is a big part of defense.
When I am guarding someone, anywhere on the court, I try to look at their eyes to read what their next move might be. If it comes to my man, I'm going to pick it off. A lot of coaches teach players to look at their opponent's stomach or numbers on defense. It works much better for me to look at my opponent's eyes. It keeps my head up and it keeps me focused on the challenge of reading their next move.