The following is from a short story called "Memento Mori" by Jonathan Nolan, who is the brother of film director Christopher Nolan. The short story is based off a premise that the two brothers came up with while driving cross-country. For Jonathan, it became the short story from which this is taken; for Christopher, it became the film Memento.
Here's the truth: People, even regular people, are never just any one person with one set of attributes. It's not that simple. We're all at the mercy of the limbic system, clouds of electricity drifting through the brain. Every man is broken into twenty-four-hour fractions, and then again within those twenty-four hours. It's a daily pantomime, one man yielding control to the next: a backstage crowded with old hacks clamoring for their turn in the spotlight. Every week, every day. The angry man hands the baton over to the sulking man, and in turn to the sex addict, the introvert, the conversationalist. Every man is a mob, a chain gang of idiots.
This is the tragedy of life. Because for a few minutes of every day, every man becomes a genius. Moments of clarity, insight, whatever you want to call them. The clouds part, the planets get in a neat little line, and everything becomes obvious. I should quit smoking, maybe, or here's how I could make a fast million, or such and such is the key to eternal happiness. That's the miserable truth. For a few moments, the secrets of the universe are opened to us. Life is a cheap parlor trick.
But then the genius, the savant, has to hand over the controls to the next guy down the pike, most likely the guy who just wants to eat potato chips, and insight and brilliance and salvation are all entrusted to a moron or a hedonist or a narcoleptic.
The only way out of this mess, of course, is to take steps to ensure that you control the idiots that you become. To take your chain gang, hand in hand, and lead them. The best way to do this is with a list.
It's like a letter you write to yourself. A master plan, drafted by the guy who can see the light, made with steps simple enough for the rest of the idiots to understand. Follow steps one through one hundred. Repeat as necessary.
In essence, this is the method of any workout program: everything regimented, a habit is developed for the chain-gang to follow and improve itself despite what may be its desire at any given point to sit on the couch downing potato chips. The same may be said for any positive habit we wish to inculcate within ourselves. We're creatures of habit; the question is which aspect of ourself is going to set the habits?