Good time managers calculate how long things take and build the time they need into their schedules. This is not a mysterious talent that some people are born with and you lack. It’s a simple skill anyone can learn.

Good time managers make a conscious decision to figure out how long a task will take. They simply ask themselves that question. This is a big missing link for the rest of us who say, “Okay, I’m going to do these twelve things tomorrow,” without ever pausing to consider how long each task will take.