I think this will always be a goal, and it always should be. This is my 4th year teaching. My father has been doing it for 36 years. He is always tweaking his lessons and learning new things. In talking to him, I see that you always think back on your lessons and methods and always try to find ways to improve. My first two years teaching, I felt terrible about how I taught. I know my students learned, but I knew that I wanted to do better. I know it is normal to want to do better. Education is dynamic. It evolves. There are always innovations in education and technology. The focus for now, differentiated instruction and student engagement. I read, study, travel, write and revise it all. It will get easier, but it will never stop changing.