The goal though isn't just 52 hours, its a way of testing your desire to work on something against the call of other things.
People, like the author, feel they have no time to do anything else. But they also generally feel that they can spend an hour doing something like watch a TV show or attend some event. So you commit to 1 hour to work on your project a week. And if you are really interested in it and motivated you will find you spend more than that on it. However if you find you can't keep a commitment even to just a single hour, then that is a good indication that it isn't a priority and you should probably accept that and move on.
The goal though isn't just 52 hours, its a way of testing your desire to work on something against the call of other things.
People, like the author, feel they have no time to do anything else. But they also generally feel that they can spend an hour doing something like watch a TV show or attend some event. So you commit to 1 hour to work on your project a week. And if you are really interested in it and motivated you will find you spend more than that on it. However if you find you can't keep a commitment even to just a single hour, then that is a good indication that it isn't a priority and you should probably accept that and move on.