The hardest habit of Lifelong Learners for me to acquire will be to view problems as challenges rather than obstacles. I'm too pessimistic, I guess. Learning 2.0 is a good opportunity to practice that attitude and it will be good for me regardless of what else I learn.
At first I thought that the easiest habit for me is accepting responsibility for my own learning. I've always felt responsible for myself. But taking the initiative to overcome obstacles rather than letting them limit me is part of accepting responsibility and that I will have to work on.
Each of the 7 1/2 habits take some effort to acquire. Now I'm not sure which would be the easiest for me.