When a young comedian, who was starting out, spoke to Jerry Seinfeld on tips to shine in his career, Jerry Seinfeld told this:

He said the way to be a better comic was to create better jokes and the way to create better jokes was to write every day.

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 is to not break the chain.”

P.S. http://jamesclear.com/stop-procrastinating-seinfeld-strategy