It can change your whole outlook.
Hi Dan - I find that leaving things on my list after I cross them out gives me that sense of having done something. We live in a strange world where you can work hundreds of hours on something and the computer/USB drive looks the same. Where doing construction, you can see the fruits of your labors. I think crossing stuff of and then leaving it on my list gives me a similar sense of accomplishment. Keep up the good work!