There is a common narrative among successful people that you must be a morning person in order to do anything worthwhile. A pretty good percentage of the world’s most successful people get a very early start to their day, sometimes as early as 4:00 or 5:00 a.m.
For example, Ernest Hemingway said, “When I am working on a book or a story, I write every morning as soon after first light as possible. There is no one to disturb you and it is cool or cold and you come to your work and warm as you write. You read what you have written and, as you always stop when you know what is going to happen next, you go on from there.”
Remember, though, that for every successful writer who is an early bird, there is another one who was a night owl. The point is not to write at a certain time. Rather, the point is to write and create when your energy is at its highest. For most people, this will be in the morning, although your energy may peak at a different time of the day or night.
So whether it’s morning, afternoon, evening, late night, or sometime in between, write at whatever time works best for you. As long as the work get done, it doesn’t matter.