The to do list seems to be an essential component of organised life. Yesterday I had a good day with my to do list, lots of things got scored off. Guess what? Today wasn't so good.
At best the to do list should be a reminder to us that we should not allow the immediate to drive out the important. There are many things that could be done, many things that should be done, but what is important, what really needs to be done today? That is what we should do.