I can look back at stuff I wrote in my early days and squirm at some of the mistakes I made. But we're all learning every day; we never stop. I just hope people keep on liking what I do. That gives me such a kick.
We must not, in trying to think about how we can make a big difference, ignore the small daily differences we can make which, over time, add up to big differences that we often cannot foresee.