OK, I went through the 7 1/2 Habits. I think # 7 1/2 (Play) just might be the easiest for me. I find it "easier" for me to just jump into things with both feet and then muddle around until I find my way. Maybe not the best way but it generally works for me. That IS play for me...then I work and explore from that point.
The hardest one I think is # 6 - Using technology to your advantage. While I know that I do this on occasion, I also know there is a lot "out there" that I could use but choose not to. And the bottom line to that is that it is probably just easier to use the old stuff than to take the time to learn to use the new stuff.