I know a young lady who has a magic "reset button" in her head when it comes to having a good day. She'll tell you out of the blue that "today was the best day ever".
If you ask her why, she comes up with the most wonderful things that made it so.
One time she said, "because the sun was very shining," and another time "because I got to spend it with my family". This last was amazing because it was delivered after hours being in the car with her family.
I don't expect that adults can have "the best day ever" as often as a child can, but wouldn't it be wonderful if we could?
I'd be satisfied if more adults were happy with "today is a good day". I think that if more parents felt that way and told people (especially kids) there would be more "best days ever".
Today may end being your newest best day ever, but if you don't notice that it's a good day at all, it has much less chance.
Today is a good day to recognize what makes a good day or a great day or "the best day ever". Today is a good day to tell someone else. Let's face it, today is a good day.