Harlan Coben believes that if you are a writer, you will find the time; and that if you can't find the time, then writing isn't a priority, and you are not a writer.
For him, writing is a normal job — a job like any other.
He has compared it with plumbing, pointing out that a plumber doesn't wake up and say that he can't work with pipes today.
If, like most writers these days, you're holding down a job to pay the bills, it's not easy to find the time to write.
But it's not impossible.
It requires determination and single-mindedness.
Remember that most best-selling authors began writing when they were doing other things to earn a living.
And today, even writers who are fairly well-known often have to do other work to supplement their writing income.
As Harlan Coben has suggested it's a question of priorities.
To make writing a priority, you'll have to sacrifice some of your day-to-day activities and some things you really enjoy.