A very simple way to look at it:

When is it that I am planning for tomorrow?

Now.

When is it that I am reflecting on what needs to be done the rest of the day?

now.

"Try" to be the moment? You can't. People think "living in the moment" is something you should try to do.

You don't have to "do" anything. Just relax. Plan, remember, make decisions, imagine possibilities, and just recognize all of this is occurring now.

Not the passing infinitesimal"now" moment which has passed as soon as you "try" to grab it.

But the every flowing, timeless nowness through which past present and future pass effortlessly.