Don't ask whether today will be a good day.
Everyday is a good day.
The real question is: how much good can come out of today.
Who's life can you add value to today?
What can you create today?
How can you use your time wisely?
What's something you should focus your attention more/less on today that will help future you?
What's something new you can experience?
Who do you need to catch up with? Relationships are work, and a lot of good can come out of a conversation with an old friend.