You’ve heard the sayings: Live in the present. Focus on today. It’s not always easy.
When it comes to your writing, it’s best to use the day of the week instead of “today” or “tomorrow.”
Wrong: He’s going to be traveling again tomorrow.
Right: He’s going to be traveling again Friday.
If you’re not referencing a particular day, but instead some broad range of time in the future, it’s OK to use tomorrow:
The families of tomorrow will be rooted in a dedication to their community as well as to each other.
Same with today:
Women today have different values than those 50 years ago.