I was inconsistent with my grades in undergrad, and this was mostly due to the fact that I had an undeveloped work ethic and lacked self-discipline. After graduation, I took on a clinical research assistant job in order to grow more in these respects, and have learned much in the way of organization, discipline, etc. and I believe my supervisor can testify to this growth. This was a big part of why I wanted to take some time between college and medical school. What would be the best way to address this in my application?