I rely heavily on "to do" lists and honestly don't think I could live without them. Sometimes though, when the to do list overwhelms me, I start an "I did it" list. I write down everything I do during the day. It sounds a little cheesy, but at the end of the day (or sometimes even by noon) I am amazed at all I have done. The little things of life do take up time and add up.
Reviewing the list, when the day is done, can help you learn how to prioritize your daily goals and give you a realistic picture of how you use your time.
Try it, you just might be amazed to see where all your time goes.