This time management tip sounds like something out of Shawshank Redemption. Oddly enough, didn't Seinfeld end with the gang going to prison?
He told me to get a big wall calendar that has a whole year on one page and hang it on a prominent wall. The next step was to get a big red magic marker.
He said for each day that I do my task of writing, I get to put a big red X over that day. "After a few days you'll have a chain. Just keep at it and the chain will grow longer every day. You'll like seeing that chain, especially when you get a few weeks under your belt. Your only job next is to not break the chain."
"Don't break the chain." He said again for emphasis.
Source: Motivation: Jerry Seinfeld's productivity secret - Lifehacker