“I’ll start Monday” has been said by every version of you who never started.

Monday is doing something specific: it lets you have the decision now and the effort later, which is the most comfortable arrangement available. The feeling of having committed arrives immediately and costs nothing. By the time the day comes, the version of you who agreed to it is gone, and a different one has to do the work without having made the promise.

Do the smallest possible piece today instead, in the next ten minutes if you can. One page, one set, one email. Starting badly on a Thursday beats a perfect plan for a Monday that has already been rescheduled twice.