Today (archaically to-day) usually refers to:
"Tomorrow is a mystery. Today is a gift. That is why it is called the present."
"Do not think of todays failures, but of the success that may come tomorrow."
"No matter what happens, or how bad it seems today, life does go on, and it will be better tomorrow."
"Only sick music makes money today."
"The good times of today are the sad thoughts of tomorrow."
"Each morning when I open my eyes I say to myself: I, not events, have the power to make me happy or unhappy today."
"Yesterday is dead, tomorrow hasn't arrived yet. I have just one day, today, and I'm going to be happy in it."
"Renew, release, let go. Yesterday’s gone. There’s nothing you can do to bring it back. You can’t “should’ve” done something. You can only DO something. Renew yourself. Release that attachment. Today is a new day!"
"Dress like you are going to meet your worst enemy today."
"Your tomorrow depends entirely on what you do today."
"Every morning we are born again. What we do today is what matters most."
"The future depends on what you do today."