Author Mark Forster uses a The Round Up method he calls The Next Hour of Your Life to manage his daily tasks in even greater detail. The Next Hour use a straightforward to-do list but strives to constantly have enough items on the list to roughly fill an hour
If you have an upcoming event, your to-do list extends into the hour that follows. Additionally, you periodically add to the list throughout the day so that it always has about an hour’s worth of work on it.
Although it seems easy, Forster emphasises how effective this approach can be.